Task: Please answer the multiple choice question.
Question: Which molecules are not a substrate for CYP P450 2C9?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a.) CC(=O)C[C@@H](c1ccc([N+](=O)[O-])cc1)c1c(O)c2ccccc2oc1=O
b.) CCOc1ccccc1OCCN[C@H](C)Cc1ccc(OC)c(S(N)(=O)=O)c1
Answer: b
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}