Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a -0.680\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCCCC(=O)Nc1ccc(NC(=O)c2ccc(C)c([N+](=O)[O-])c2)cc1OC
b: O=C1CC(NCc2ccco2)C(=O)N1CCc1ccccc1
c: O=C(COC(=O)CNC(=O)c1cccc([N+](=O)[O-])c1)Nc1nc2ccccc2s1
d: Cc1ccc(CN2CCN(Cc3ccccc3)CC2)cc1
Answer: b. O=C1CC(NCc2ccco2)C(=O)N1CCc1ccccc1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__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_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C1CC(NCc2ccco2)C(=O)N1CCc1ccccc1
O=C1CC(NCc2ccco2)C(=O)N1CCc1ccccc1
3-(furan-2-ylmethylamino)-1-(2-phenylethyl)pyrrolidine-2,5-dione