Task: Please answer the multiple choice question.
Question: Which molecules are not a substrate for CYP2D6?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a Cc1c(C)c2c(c(C)c1O)CC[C@](C)(COc1ccc(C[C@@H]3SC(=O)NC3=O)cc1)O2
b CCCN1C[C@H](CSC)C[C@@H]2c3cccc4[nH]cc(c34)C[C@H]21
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}