Structure

Physi-Chem Properties

Molecular Weight:  410.39
Volume:  476.097
LogP:  8.052
LogD:  6.213
LogS:  -6.961
# Rotatable Bonds:  2
TPSA:  0.0
# H-Bond Aceptor:  0
# H-Bond Donor:  0
# Rings:  9
# Heavy Atoms:  0

MedChem Properties

QED Drug-Likeness Score:  0.427
Synthetic Accessibility Score:  6.263
Fsp3:  1.0
Lipinski Rule-of-5:  Accepted
Pfizer Rule:  Rejected
GSK Rule:  Rejected
BMS Rule:  0
Golden Triangle Rule:  Rejected
Chelating Alert:  0
PAINS Alert:  0

ADMET Properties (ADMETlab2.0)

ADMET: Absorption

Caco-2 Permeability:  -5.117
MDCK Permeability:  6.6420893745089415e-06
Pgp-inhibitor:  0.004
Pgp-substrate:  0.0
Human Intestinal Absorption (HIA):  0.055
20% Bioavailability (F20%):  0.03
30% Bioavailability (F30%):  0.974

ADMET: Distribution

Blood-Brain-Barrier Penetration (BBB):  0.778
Plasma Protein Binding (PPB):  100.8952865600586%
Volume Distribution (VD):  1.614
Pgp-substrate:  1.4412524700164795%

ADMET: Metabolism

CYP1A2-inhibitor:  0.023
CYP1A2-substrate:  0.607
CYP2C19-inhibitor:  0.105
CYP2C19-substrate:  0.97
CYP2C9-inhibitor:  0.084
CYP2C9-substrate:  0.545
CYP2D6-inhibitor:  0.015
CYP2D6-substrate:  0.817
CYP3A4-inhibitor:  0.277
CYP3A4-substrate:  0.609

ADMET: Excretion

Clearance (CL):  15.823
Half-life (T1/2):  0.004

ADMET: Toxicity

hERG Blockers:  0.008
Human Hepatotoxicity (H-HT):  0.081
Drug-inuced Liver Injury (DILI):  0.005
AMES Toxicity:  0.001
Rat Oral Acute Toxicity:  0.021
Maximum Recommended Daily Dose:  0.831
Skin Sensitization:  0.103
Carcinogencity:  0.012
Eye Corrosion:  0.401
Eye Irritation:  0.909
Respiratory Toxicity:  0.957

Download Data

Data Type Select
General Info & Identifiers & Properties  
Structure MOL file  
Source Organisms  
Biological Activities  
Similar NPs/Drugs  

  Natural Product: NPC315877

Natural Product ID:  NPC315877
Common Name*:   DNYABHDQAOSFRC-UHFFFAOYSA-N
IUPAC Name:   n.a.
Synonyms:  
Standard InCHIKey:  DNYABHDQAOSFRC-UHFFFAOYSA-N
Standard InCHI:  InChI=1S/C30H50/c1-24(2)19-10-13-27(7,22(24)16-19)29(9)15-12-21-18-30(29,26(21,5)6)28(8)14-11-20-17-23(28)25(20,3)4/h19-23H,10-18H2,1-9H3
SMILES:  CC1(C2CCC(C1C2)(C)C3(CCC4CC3(C4(C)C)C5(CCC6CC5C6(C)C)C)C)C
Synthetic Gene Cluster:   n.a.
ChEMBL Identifier:   n.a.
PubChem CID:   53472048
Chemical Classification**:  
  • CHEMONTID:0000000 [Organic compounds]
    • [CHEMONTID:0000012] Lipids and lipid-like molecules
      • [CHEMONTID:0000259] Prenol lipids
        • [CHEMONTID:0001549] Monoterpenoids
          • [CHEMONTID:0001564] Bicyclic monoterpenoids

*Note: the InCHIKey will be temporarily assigned as the "Common Name" if no IUPAC name or alternative short name is available.
**Note: the Chemical Classification was calculated by NPClassifier Version 1.5. Reference: PMID:34662515.

  Species Source

Organism ID Organism Name Taxonomy Level Family SuperKingdom Isolation Part Collection Location Collection Time Reference
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. stem n.a. DOI[10.1007/s11418-006-0112-9]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. flower n.a. DOI[10.1007/s11418-006-0112-9]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. leaf n.a. DOI[10.1007/s11418-006-0112-9]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. leaf n.a. DOI[10.1016/S0031-9422(00)94055-X]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. flower n.a. DOI[10.3390/70200245]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. fruit n.a. PMID[10606547]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. kernel n.a. PMID[10670815]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota roots n.a. n.a. PMID[12398547]
NPO28256 Platycladus orientalis Species Cupressaceae Eukaryota Leaves and branches Soorkesh Valley, Gollestan, Iran n.a. PMID[15104493]
NPO28256 Platycladus orientalis Species Cupressaceae Eukaryota leaves Soorkesh Valley, Gollestan, Iran n.a. PMID[15104493]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. fruit n.a. PMID[15577254]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. PMID[15621610]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Fruits Malatya Fruit Research Institute between the first and third weeks of 2005-Jul. PMID[18038980]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. root n.a. PMID[18164718]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota rhizomes n.a. n.a. PMID[18177011]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. PMID[19271742]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. PMID[20590154]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. PMID[20853876]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota roots n.a. n.a. PMID[22381047]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota fruits n.a. n.a. PMID[23327905]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. PMID[24175626]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. PMID[24617303]
NPO2392 Hansenia weberbaueriana Species Apiaceae Eukaryota n.a. n.a. n.a. PMID[25333853]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota Leaves n.a. n.a. PMID[28453270]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. PMID[28485933]
NPO522 Oenanthe javanica Species Apiaceae Eukaryota n.a. n.a. n.a. PMID[31125231]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. root n.a. PMID[547813]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. PMID[6387056]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. rhizome n.a. PMID[8064299]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. PMID[8064299]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota Plant n.a. n.a. Database[FooDB]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota Resin, Exudate, Sap n.a. n.a. Database[FooDB]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota Rhizome n.a. n.a. Database[FooDB]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota Root n.a. n.a. Database[FooDB]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Seed n.a. n.a. Database[FooDB]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. Database[FooDB]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. Database[FooDB]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Fruits n.a. Database[FooDB]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota n.a. n.a. Database[FooDB]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. Database[FooDB]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. Database[FooDB]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. Database[FooDB]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota n.a. n.a. Database[FooDB]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota Fruit n.a. n.a. Database[FooDB]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Fruit n.a. n.a. Database[FooDB]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Leaf n.a. n.a. Database[FooDB]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO522 Oenanthe javanica Species Apiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO15881 Pericarpium zanthoxyli n.a. n.a. n.a. n.a. n.a. n.a. Database[HerDing]
NPO20513 Codium fragile Species Codiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO5665 Ulva pertusa Species Ulvaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO7317.1 Citrus aurantium var. amara Varieties Rutaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO4795.1 Prunus armeniaca var. ansu Varieties Rosaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO12468.1 Asarum heterotropoides var. mandshuricum Varieties Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO24972 Ocimum kilimandscharicum Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO8367 Fructus schiandrae n.a. n.a. n.a. n.a. n.a. n.a. Database[HerDing]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. Database[Phenol-Explorer]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota Fruits n.a. Database[Phenol-Explorer]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. Database[Phenol-Explorer]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota Fruits n.a. Database[Phenol-Explorer]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota Fruits n.a. Database[Phenol-Explorer]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota n.a. n.a. Database[Phenol-Explorer]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO8367 Fructus schiandrae n.a. n.a. n.a. n.a. n.a. n.a. Database[TCMID]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO12468.1 Asarum heterotropoides var. mandshuricum Varieties Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO20513 Codium fragile Species Codiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO24972 Ocimum kilimandscharicum Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO13730 Magnolia liliiflora Species Magnoliaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO4795.1 Prunus armeniaca var. ansu Varieties Rosaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO22178.1 Centranthus longiflorus ssp. longiflorus Subspecies Caprifoliaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO27048 Pyropia tenera Species Bangiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO2392 Hansenia weberbaueriana Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO522 Oenanthe javanica Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO15881 Pericarpium zanthoxyli n.a. n.a. n.a. n.a. n.a. n.a. Database[TCMID]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO7317.1 Citrus aurantium var. amara Varieties Rutaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO5665 Ulva pertusa Species Ulvaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO28256 Platycladus orientalis Species Cupressaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO24972 Ocimum kilimandscharicum Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO522 Oenanthe javanica Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO28256 Platycladus orientalis Species Cupressaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO20513 Codium fragile Species Codiaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO5665 Ulva pertusa Species Ulvaceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO28256 Platycladus orientalis Species Cupressaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO2392 Hansenia weberbaueriana Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO20553 Zingiber officinale Species Zingiberaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. n.a. Database[TM-MC]
NPO28295 Foeniculum vulgare Species Apiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO13730 Magnolia liliiflora Species Magnoliaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO24972 Ocimum kilimandscharicum Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO27048 Pyropia tenera Species Bangiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO21373 Vitex trifolia Species Lamiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO4795 Prunus armeniaca Species Rosaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO17333 Valeriana officinalis Species Caprifoliaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20513 Codium fragile Species Codiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO5386 Citrus paradisi Species Rutaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO5665 Ulva pertusa Species Ulvaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO5315 Zanthoxylum bungeanum Species Rutaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO6336 Asarum sieboldii Species Aristolochiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO26589 Artemisia annua L. Strain Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO25443 Citrus reticulata Species Rutaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO522 Oenanthe javanica Species Apiaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO28256 Platycladus orientalis Species Cupressaceae 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 NP ID 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

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

☑ Note for Activity Records:
☉ The quantitative biological activities were primarily integrated from ChEMBL (Version-30) database and were also directly collected from PubMed literature. PubMed PMID was provided as the reference link for each activity record.

  Chemically structural similarity: I. Similar Active Natural Products in NPASS

Top-200 similar NPs were calculated against the active-NP-set (includes 4,3285 NPs with experimentally-derived bioactivity available in NPASS)

Similarity level is defined by Tanimoto coefficient (Tc) between two molecules. Tc lies between [0, 1] where '1' indicates the highest similarity. What is Tanimoto coefficient

●  The left chart: Distribution of similarity level between NPC315877 and all remaining natural products in the NPASS database.
●  The right table: Most similar natural products (Tc>=0.56 or Top200).

Similarity Score Similarity Level Natural Product ID

  Chemically structural similarity: II. Similar Clinical/Approved Drugs

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

●  The left chart: Distribution of similarity level between NPC315877 and all drugs/candidates.
●  The right table: Most similar clinical/approved drugs (Tc>=0.56 or Top200).

Similarity Score Similarity Level Drug ID Developmental Stage

  Bioactivity similarity: Similar Natural Products in NPASS

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