Natural Product: NPC122922

Natural Product IDNPC122922
Common Name
?
The InCHIKey will be temporarily assigned as the "Common Name" if no IUPAC name or alternative short name is available.
 OUGNWRCWQLUXHX-SSJBJWSWSA-N
IUPAC Name n.a.
Synonyms
Synthetic Gene Cluster n.a.
ChEMBL Identifier n.a.
PubChem CID 76332505
Chemical Classification
  • CHEMONTID:0000000 [Organic compounds]
    • [CHEMONTID:0004603] Organic oxygen compounds
      • [CHEMONTID:0000323] Organooxygen compounds
        • [CHEMONTID:0000011] Carbohydrates and carbohydrate conjugates
          • [CHEMONTID:0002105] Glycosyl compounds
            • [CHEMONTID:0004165] Phenolic glycosides

The Chemical Classification was calculated by Classyfire, a software for chemical taxonomy calculation. Reference: DOI:10.1186/s13321-016-0174-y.

  Chemical Representations

Standard InCHIKey OUGNWRCWQLUXHX-SSJBJWSWSA-N
Standard InCHI InChI=1S/C29H32O11/c1-14-10-20(37-3)24(27-23(14)19(33)12-18(38-27)11-15(2)31)28-29(26(36)25(35)21(13-30)39-28)40-22(34)9-6-16-4-7-17(32)8-5-16/h4-10,12,15,21,25-26,28-32,35-36H,11,13H2,1-3H3/b9-6+/t15-,21+,25+,26-,28-,29+/m0/s1
SMILES Cc1cc(c(c2c1c(=O)cc(C[C@H](C)O)o2)[C@H]1[C@@H]([C@H]([C@@H]([C@@H](CO)O1)O)O)OC(=O)/C=C/c1ccc(cc1)O)OC

  Calculated Properties

Physi-Chem Properties

Molecular Weight:   556.19 Volume:   546.242
?
Van der Waals volume.
Dense:   1.018 LogP:   1.442
?
The logarithm of the n-octanol/water distribution coefficients.
logD7.4:   1.865
?
The logarithm of the n-octanol/water distribution coefficient at pH=7.4.
 LogS:   -3.339
?
The logarithm of aqueous solubility value.
Rotatable Bonds:   9.0 Rigid Bonds:   26.0
TPSA:   176.12
?
Topological Polar Surface Area.
 H-Bond Acceptor:   11.0
H-Bond Donor:   5.0 Rings:   4.0
Heavy Atoms:   11.0

MedChem Properties

QED Drug-Likeness Score:   0.201 GASA:   1.0
?
GASA represents the probability of being difficult to synthesize, ranging from 0 to 1.
Synthetic Accessibility Score:   4.402 Fsp3:   0.379
MCE-18:   91.0
?
MCE-18 stands for medicinal chemistry evolution.MCE-18≥45 is considered a suitable value.
 Lipinski Rule-of-5:   Accepted
Pfizer Rule:   Rejected GSK Rule:   Accepted
Golden Triangle Rule:   Accepted BMS Rule:   0
Chelating Alert:   0 PAINS Alert:   0
Colloidal aggregators:   0.788 Fluc inhibitor:   0.655
?
The fluc inhibitor value is the probability of being fLuc inhibitors, within the range of 0 to 1.
Blue fluorescence:   0.495
?
The blue fluorescence value is the probability of being blue fluorescence, within the range of 0 to 1
 Green fluorescence:   0.73
?
The green fluorescence value is the probability of being green fluorescence, within the range of 0 to 1
Reactive compounds:   0.038 Promiscuous compounds:   0.081

ADMET Properties (ADMETlab3.0)

ADMET: Absorption

Caco-2 Permeability:   -5.736 MDCK Permeability:   -5.155
Pgp-inhibitor:   0.0 Pgp-substrate:   0.249
PAMPA:   0.975
?
The experimental data for Peff was logarithmically transformed (logPeff). Molecules with log Peff values below 2.0 were classified as low-permeability (Category 0), while those with log Peff values exceeding 2.5 were classified as high-permeability (Category 1).
 Human Intestinal Absorption (HIA):   0.037
20% Bioavailability (F20%):   0.7 30% Bioavailability (F30%):   0.982
50% Bioavailability (F50%):   0.999

ADMET: Distribution

Blood-Brain-Barrier Penetration (BBB):   0.0 MRP1:   0.063
Plasma Protein Binding (PPB):   77.855% Volume Distribution (VD):   0.047
Fu: 22.912%
?
The fraction unbound in plasms.
 OATP1B1 inhibitor:   0.919
OATP1B3 inhibitor:   0.997 BCRP inhibitor:   0.001
BSEP inhibitor:   0.982

ADMET: Metabolism

CYP1A2-inhibitor:   0.0 CYP1A2-substrate:   0.0
CYP2C19-inhibitor:   0.003 CYP2C19-substrate:   0.0
CYP2C9-inhibitor:   0.0 CYP2C9-substrate:   0.0
CYP2D6-inhibitor:   0.0 CYP2D6-substrate:   0.002
CYP3A4-inhibitor:   0.001 CYP3A4-substrate:   0.171
CYP2B6-substrate:   0.0 CYP2C8-inhibitor:   0.93
HLM stability:   0.268
?
Human liver microsomal (HLM) stability. Category 0: stable+ (HLM > 30 min); Category 1: unstable- (HLM ≤ 30 min). The output value is the probability of human liver microsomal instability, where a value closer to 1 indicates a higher likelihood of instability.

ADMET: Excretion

Clearance (CL):  3.525 Half-life (T1/2):  2.865

ADMET: Toxicity

hERG Blockers:  0.05 hERG Blockers (10um):  0.148
Human Hepatotoxicity (H-HT):  0.772 Drug-induced Liver Injury (DILI):  0.978
AMES Toxicity:  0.948 Rat Oral Acute Toxicity:  0.048
Maximum Recommended Daily Dose:  0.545 Skin Sensitization:  0.999
Carcinogencity:  0.678 Eye Corrosion:  0.0
Eye Irritation:  0.336 Respiratory Toxicity:  0.087
Drug-induced Neurotoxicity:  0.173 Ototoxicity:  0.751
Hematotoxicity:  0.282 Drug-induced Nephrotoxicity:  0.794
Genotoxicity:  0.993 RPMI-8226 Immunitoxicity:  0.183
A549 Cytotoxicity:  0.531 Hek293 Cytotoxicity:  0.846
BCF:   0.715
?
Bioconcentration factors are used for considering secondary poisoning potential and assessing risks to human health via the food chain. The unit is -log10[(mg/L)/(1000*MW)].
 IGC50:   3.424
?
48 hour Tetrahymena pyriformis IGC50. The unit of IGC50 is -log10[(mg/L)/(1000*MW)].
LC50DM:   5.215
?
48 hour Daphnia magna LC50. The unit of LC50DM is -log10[(mg/L)/(1000*MW)].
 LC50FM:   4.491
?
96 hour fathead minnow LC50. The unit of LC50FM is -log10[(mg/L)/(1000*MW)].

  Species Source

Organism ID Organism Name Taxonomy Level Family SuperKingdom Isolation Part Collection Location Collection Time Reference
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota Flowers Tantempango, Hidalgo, Mexico 2019-May DOI[10.1007/s11130-020-00822-2]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota leaves n.a. n.a. PMID[12828478]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota Roots n.a. n.a. PMID[14575431]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. root n.a. PMID[15520511]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota seeds n.a. n.a. PMID[15620254]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota seeds n.a. n.a. PMID[1624939]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. PMID[16297615]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. PMID[17027268]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. root n.a. PMID[1800638]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. whole plant n.a. PMID[18543151]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. PMID[19299148]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota roots n.a. n.a. PMID[19299148]
NPO11530 Heterosigma akashiwo Species Chattonellaceae Eukaryota n.a. n.a. n.a. PMID[19659728]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota Seeds n.a. n.a. PMID[19715321]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. PMID[19919052]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota Seeds n.a. n.a. PMID[19931461]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. PMID[23403897]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. PMID[24358188]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. PMID[24467387]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota roots n.a. n.a. PMID[25066952]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. PMID[25905468]
NPO5401 Monanchora unguiculata Species Crambeidae Eukaryota n.a. n.a. n.a. PMID[28368118]
NPO9644 Euphorbia resinifera Species Euphorbiaceae Eukaryota n.a. n.a. n.a. PMID[29667820]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. PMID[38163555]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. PMID[8778246]
NPO3924 Penicillium alutaceum Species Aspergillaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO13604 Dermocybe cardinalis Species Cortinariaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO11530 Heterosigma akashiwo Species Chattonellaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO20318 Acinetobacter baumannii Species Moraxellaceae Bacteria n.a. n.a. n.a. Database[COCONUT]
NPO8220 Russula sardonia Species Russulaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO20383 Stenocereus thurberi Species Cactaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO9024 Aralidium pinnatifidum Species Torricelliaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO9644 Euphorbia resinifera Species Euphorbiaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO13494 Prosopis kuntzei Species Fabaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO5401 Monanchora unguiculata Species Crambeidae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO893 Helichrysum sutherlandii Species Asteraceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO12988 Blainvillea latifolia Species Asteraceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO2837 Aloe spicata Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO2997 Aloe africana Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO9644 Euphorbia resinifera Species Euphorbiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO893 Helichrysum sutherlandii Species Asteraceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO9644 Euphorbia resinifera Species Euphorbiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO2837 Aloe spicata Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO2997 Aloe africana Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO5401 Monanchora unguiculata Species Crambeidae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO11072 Geigeria schinzii Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20318 Acinetobacter baumannii Species Moraxellaceae Bacteria n.a. n.a. n.a. Database[UNPD]
NPO6014 Goniothalamus undulatus Species Annonaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO14280 Helichrysum angustifolium Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO6626 Pteris spinulosa Species Pteridaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO3576 Bersama swinnyi Species Melianthaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO2084 Acinetobacter calcoaceticus Species Moraxellaceae Bacteria n.a. n.a. n.a. Database[UNPD]
NPO3924 Penicillium alutaceum Species Aspergillaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO11530 Heterosigma akashiwo Species Chattonellaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO1418 Boletinus paluster Species Gyrodontaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO9024 Aralidium pinnatifidum Species Torricelliaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO9965 Eurycoma longifolia Species Simaroubaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO9644 Euphorbia resinifera Species Euphorbiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO13604 Dermocybe cardinalis Species Cortinariaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO893 Helichrysum sutherlandii Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO11578 Aloe vera Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO14763 Aloe ferox Species Asphodelaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO12988 Blainvillea latifolia Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO12577 Pinus glauca Species Pinaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO8640 Nemuaron humboldtii Species Atherospermataceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO12890 Ophryosporus charua Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO22888 Lophiostoma vaginatispora Species Lophiostomataceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO13798 Cheilanthes marantae Species Pteridaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO13494 Prosopis kuntzei Species Fabaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO8820 Lophocereus marginatus Species Cactaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO9375 Medium grandiflorum n.a. n.a. n.a. n.a. n.a. n.a. Database[UNPD]
NPO20383 Stenocereus thurberi Species Cactaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO2997 Aloe africana Species Xanthorrhoeaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO2505 Pachycereus pringlei Species Cactaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO12026 Papaver radicatum Species Papaveraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO14602 Vitex negundo Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO13692 Leontice kiangnanensis Species Berberidaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO8220 Russula sardonia Species Russulaceae Eukaryota n.a. n.a. n.a. Database[UNPD]

Note for Reference:
In addition to directly collecting NP source organism data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated them from below databases:
☉ UNPD: Universal Natural Products Database [PMID: 23638153].
☉ StreptomeDB: a database of streptomycetes natural products [PMID: 33051671].
☉ TM-MC: a database of medicinal materials and chemical compounds in Northeast Asian traditional medicine [PMID: 26156871].
☉ TCM@Taiwan: a Traditional Chinese Medicine database [PMID: 21253603].
☉ TCMID: a Traditional Chinese Medicine database [PMID: 29106634].
☉ TCMSP: The traditional Chinese medicine systems pharmacology database and analysis platform [PMID: 24735618].
☉ HerDing: a herb recommendation system to treat diseases using genes and chemicals [PMID: 26980517].
☉ MetaboLights: a metabolomics database [PMID: 27010336].
☉ FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].



  NP Quantity Composition/Concentration

Organism ID Organism Name Organism Material Preparation Organism Part NP Quantity (Standard) NP Quantity (Minimum) NP Quantity (Maximum) Quantity Unit Reference

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP quantitative records for specific NP domains (e.g., NPS from foods or herbs) from domain-specific databases. These databases include:
☉ DUKE: Dr. Duke's Phytochemical and Ethnobotanical Databases.
☉ PHENOL EXPLORER: is the first comprehensive database on polyphenol content in foods [PMID: 24103452], its homepage can be accessed at here.
☉ FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].



 Biological Activity

Molecular-level activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference

In vitro activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference

In vivo activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference





 Experimental ADME

Experiment Model Experiment Tissue ADME Type ADME Relation ADME Value ADME Unit Reference





 Experimental Toxicity

Quantitative toxicity

Experiment Model Experiment Organism Toxicity Type Toxicity Relation Toxicity Value Toxicity Unit Reference

Common Abbreviations:
LC: Lethal Concentration; LD: Lethal Dose; LT:Lethal Time; NOAEL: No-observed-adverse-effect Level; BMDL: Benchmark Dose Lower Confidence Limit; BMD: Benchmark Dose; BMC:Benchmark Concentration; LOAEL: Lowest Observed Adverse Effect Level; RfD:Reference Dose; RfC:Reference Concentration; MRL: Minimal Risk Level; MEG: Maximum Exposure Guideline; PAC: Protective Action Criteria

Categorical toxicity labels

Hepatotoxicity Carcinogenicity Mutagenicity Cardiotoxicity Respiratory Toxicity Eye Irritation Endocrine Disruption
Hepatotoxicity Carcinogenicity Mutagenicity Cardiotoxicity Respiratory Toxicity Eye Irritation Endocrine Disruption

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP toxicity records from domain-specific databases. These databases include:
☉ ToxValDB: a curated database that compiles quantitative toxicity values for chemicals from diverse public sources to support toxicological research and risk assessment.
☉ TOXRIC: a comprehensive, free-to-access, online database providing toxicological/feature data. The toxicity labels are retrieved from this database. [PMID: 36400569]


  Chemically structural similarity

Similar Active Natural Products in NPASS

Top-200 similar NPs were calculated against the active-NP-set (includes approximately 50,000 NPs with experimentally-derived bioactivity available in NPASS)

Similarity is measured using the Tanimoto coefficient (Tc) , which compares the binary fingerprints of two molecules. Tc is calculated as the intersection divided by the union of '1' bits in the fingerprints, ranging from 0 to 1, with 1 indicating highest similarity.

●  The left chart: Distribution of similarity level between NPC122922 and all remaining natural products in the NPASS database.
●  The right table: Most similar natural products (Tc>=0.5 or Top200).

Similarity Score Similarity Level Natural Product ID
1.0 High Similarity NPC195312
0.8966 High Similarity NPC288078

Similar Clinical/Approved Drugs

Similarity level is defined by Tanimoto coefficient (Tc) between two molecules.

●  The left chart: Distribution of similarity level between NPC122922 and all drugs/candidates.
●  The right table: Most similar clinical/approved drugs (Tc>=0.5 or Top200).

Similarity Score Similarity Level Drug ID Developmental Stage
NPD

Bioactivity similarity

  Bioactivity similarity

Similar Natural Products in NPASS

Similarity level is defined by Bioactivity similarity was calculated based on bioactivity descriptors of compounds. The bioactivity descriptors were calculated by a recently developed AI algorithm Chemical Checker (CC) [Nature Biotechnology, 38:1087–1096, 2020; Nature Communications, 12:3932, 2021], which evaluated bioactivity similarities at five levels:
☉ A: chemistry similarity;
☉ B: biological targets similarity;
☉ C: networks similarity;
☉ D: cell-based bioactivity similarity;
☉ E: similarity based on clinical data.
Those 5 categories of CC bioactivity descriptors were calculated and then subjected to manifold projection using UMAP algorithm, to project all NPs on a 2-Dimensional space. The current NP was highlighted with a small circle in the 2-D map. Below figures: left-to-right, A-to-E.

A: chemistry similarity
B: biological targets similarity
C: networks similarity
D: cell-based bioactivity similarity
E: similarity based on clinical data