User: I'm looking for the SMILES of a molecule that is not metabolized by CYP P450 3A4?
Assistant: This is a molecule that is not a CYP P450 3A4 substrate: Cn1c(=O)[nH]c2ncn(C)c2c1=O
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that is {CYP3A4_Substrate#not &NULL}{CYP3A4_Substrate__names__verb}?
Assistant: This is a molecule that is {CYP3A4_Substrate#not &NULL}a {CYP3A4_Substrate__names__noun}: {SMILES#}
1,7-dimethyl-3H-purine-2,6-dione