Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (IC50 less than 10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] Cc1ccc(C(=O)N2CCC(C(=O)Nc3cccc([N+](=O)[O-])c3)CC2)cc1
[b] O=C(NCCN1CCN(S(=O)(=O)c2ccc(F)cc2)CC1)C(=O)NCc1ccccc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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%herg_inhib%}
Answer: {%multiple_choice_result}