Task: Please answer the multiple choice question.
Question: Which molecules are not a CYP2D6 substrate?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] Cc1cccc(Nc2ccccc2C(=O)O)c1C
[b] C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O
Answer: a
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}