Task: Please answer the multiple choice question.
Question: Which molecules are 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)CCCCn1c(=O)c2c(ncn2C)n(C)c1=O
(b) COc1ccc2c(c1)c(CC(=O)O)c(C)n2C(=O)c1ccc(Cl)cc1
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}
2-[1-(4-chlorobenzoyl)-5-methoxy-2-methylindol-3-yl]acetic acid