Task: Please answer the multiple choice question.
Question: Which molecules are not a CYP P450 2C9 substrate?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) O=C1NC(c2ccccc2)(c2ccccc2)C(=O)N1COP(=O)(O)O
b) Cc1ncc2n1-c1ccc(Cl)cc1C(c1ccccc1F)=NC2
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}