Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(NC1CCN(Cc2ccccc2)CC1)c1cc(=O)c2ccc(F)cc2o1
[b] Cc1cnc(C(=O)NCCc2ccc(S(=O)([O-])=NC(=O)NC3CCCCC3)cc2)cn1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
N-(1-benzylpiperidin-4-yl)-7-fluoro-4-oxochromene-2-carboxamide