Task: Please answer the multiple choice question.
Question: Which molecules are not a CYP P450 2D6 substrate?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: c1ccc(C2(c3ccccc3)C[C@H]2C2=NCCN2)cc1
b: C[C@]12C[C@H](O)[C@H]3[C@@H](CCC4=CC(=O)CC[C@@]43C)[C@@H]1CC[C@@H]2C(=O)CO
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}