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. 2021 Jul 9;9:e11716. doi: 10.7717/peerj.11716

Table 4. Summary of top 20 features from the ERβ model along with their corresponding SMARTS patterns and description.

The top features were obtained from the feature importance plot of the RF model.

Features SMARTS pattern Substructure description
PubChemFP392 N(~C)(~C)(~H) N-methylmethanamine
PubChemFP697 C-C-C-C-C-C(C)-C 2-methylheptane
PubChemFP451 C(-N)(=O) Formamide
PubChemFP439 C(-C)(-N)(=O) Acetamide
PubChemFP777 CC1CCC(O)CC1 4-methylphenol
PubChemFP393 N(~C)(~H) Methanamine
PubChemFP714 Cc1ccc(O)cc1 4-methylphenol
PubChemFP299 N-H Lambda1-azane
PubChemFP450 C(-N)(=N) Methanimidamide
PubChemFP645 O=C-N-C-C N-ethylformamide
PubChemFP15 >= 2 N Greater than or equal to two nitrogen atoms
PubChemFP259 >= 3 aromatic rings Greater than or equal to three aromatic rings
PubChemFP617 C-C-C-O-[#1] Propan-1-ol
PubChemFP375 C(~N)(~N) Methanediamine
PubChemFP699 O-C-C-C-C-C(C)-C 5-methylhexan-1-ol
PubChemFP646 O=C-N-C-[#1] N-methylformamide
PubChemFP696 C-C-C-C-C-C-C-C Octane
PubChemFP687 O=C-C-C-C=O Butanedial
PubChemFP599 [#1]-C-C=C-[#1] Prop-1-ene
PubChemFP406 O(~C)(~H) Methanol