Task: Answer the multiple-choice question.
Question: Which compound exhibits a -1.752\% 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) CC(=O)c1ccc(C(=O)NC2CCCN(Cc3ccccc3F)C2)cc1
(b) O=[N+]([O-])c1cccnc1N1CCCNCC1
(c) CCc1c(C)sc(NC(=O)c2cc(C(C)C)on2)c1C#N
(d) OC1CCNC(=S)N1c1ccccc1
Answer: b. O=[N+]([O-])c1cccnc1N1CCCNCC1
{#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=[N+]([O-])c1cccnc1N1CCCNCC1
O=[N+]([O-])c1cccnc1N1CCCNCC1
[2-(1,4-diazepan-1-yl)pyridin-3-yl]-oxido-oxoazanium