The molecule with the SMILES representation of Cn1c(=O)[nH]c2ncn(C)c2c1=O is not a substrate for CYP P450 2C9.
The molecule with the {SMILES__description} {#representation of |!}{SMILES#} is {CYP2C9_Substrate#not &NULL}a {CYP2C9_Substrate__names__noun}.
1,7-dimethyl-3H-purine-2,6-dione