Task: Answer the multiple choice question.
Query: Which drug exhibits a 5.407\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a Cc1ncc([N+](=O)[O-])n1Cc1ccc(F)cc1
b COCc1cc(C)nc(SCC[N+](C)(C)CC(=O)c2ccc(Br)cc2)c1C#N.[Br-]
Answer: a. Cc1ncc([N+](=O)[O-])n1Cc1ccc(F)cc1
{#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#}
Cc1ncc([N+](=O)[O-])n1Cc1ccc(F)cc1
Cc1ncc([N+](=O)[O-])n1Cc1ccc(F)cc1
1-[(4-fluorophenyl)methyl]-2-methyl-5-nitroimidazole