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: CCn1cc(C(=O)O)c(=O)c2ccc(C)nc21
b: O=C(c1ccc(OCCN2CCCCC2)cc1)c1c(-c2ccc(O)cc2)sc2cc(O)ccc12
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}