Task: Please answer the multiple choice question.
Question: Which molecules are a substrate for CYP P450 2D6?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CCn1cc(C(=O)O)c(=O)c2cc(F)c(N3CCNCC3)nc21
[b] O=C1CCc2ccc(OCCCCN3CCN(c4cccc(Cl)c4Cl)CC3)cc2N1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {CYP2D6_Substrate#not &NULL}a {CYP2D6_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%CYP2D6_Substrate%}
Answer: {%multiple_choice_result}