Task: Please answer the multiple choice question.
Question: Which molecules are a CYP P450 2C9 substrate?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. COc1ccc2c3c1O[C@H]1C(=O)CC[C@@]4(O)[C@@H](C2)N(C)CC[C@]314
b. CCCCC1C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
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}