User: Is the molecule with the SMILES Cn1cnc2c1c(=O)[nH]c(=O)n2C metabolized by CYP P450 2C9?
Assistant: No, it is not a CYP2C9 substrate.
User: Is the molecule with the {SMILES__description} {SMILES#} {CYP2C9_Substrate__names__verb}?
Assistant: {CYP2C9_Substrate#No&Yes}, it is {CYP2C9_Substrate#not &NULL}a {CYP2C9_Substrate__names__noun}.
3,7-dimethylpurine-2,6-dione