Task: Please answer the multiple choice question.
Question: Which molecules are not a CYP2C9 substrate?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] C[C@@H](O)CCCCn1c(=O)c2c(ncn2C)n(C)c1=O
[b] COc1ccc([C@@H]2Sc3ccccc3N(CCN(C)C)C(=O)[C@@H]2OC(C)=O)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {CYP2C9_Substrate#not &NULL}a {CYP2C9_Substrate__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%CYP2C9_Substrate%}
Answer: {%multiple_choice_result}
1-[(5R)-5-hydroxyhexyl]-3,7-dimethylpurine-2,6-dione