Task: Answer the multiple-choice question.
Query: Which compound has a 4.989\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. CC(=O)Nc1c(-c2ccc3ccccc3c2)nc2ccccn12
b. O=C(Cn1cc[n+](CC(=O)c2ccccc2)c1)c1ccccc1.[Br-]
Answer: b. O=C(Cn1cc[n+](CC(=O)c2ccccc2)c1)c1ccccc1.[Br-]
{#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=C(Cn1cc[n+](CC(=O)c2ccccc2)c1)c1ccccc1.[Br-]
O=C(Cn1cc[n+](CC(=O)c2ccccc2)c1)c1ccccc1.[Br-]
2-(3-phenacylimidazol-3-ium-1-yl)-1-phenylethanone;bromide