Task: Please answer the multiple choice question.
Question: Which molecules are a CYP2C9 substrate?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] Cn1ccnc1S
[b] CCOP(=S)(OCC)Oc1nc(Cl)c(Cl)cc1Cl
[c] CC(C)C[C@H]1C(=O)N2CCC[C@H]2[C@]2(O)O[C@](NC(=O)[C@@H]3C=C4c5cccc6[nH]c(Br)c(c56)C[C@H]4N(C)C3)(C(C)C)C(=O)N12
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}