Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] N[C@H](C(=O)N1CCC(F)C1)C1CCC(NS(=O)(=O)c2ccc(F)cc2F)CC1
[b] CCN1CCN(c2cc3[nH]c(SC(C)(C)C)nc3cc2Cl)C(C)C1
[c] O=C(O)CN(CCOc1ccc([N+](=O)[O-])cc1)CCc1ccc([N+](=O)[O-])cc1
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-[4-[(1S)-1-amino-2-(3-fluoropyrrolidin-1-yl)-2-oxoethyl]cyclohexyl]-2,4-difluorobenzenesulfonamide