Task: Please answer the multiple choice question.
Question: Which molecules are not a substrate for CYP P450 2D6?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) CCOc1cc(N)c(Cl)cc1C(=O)NC[C@@H]1CN(Cc2ccc(F)cc2)CCO1
(b) CCCCC1C(=O)N(c2ccccc2)N(c2ccccc2)C1=O
Answer: a, 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}