Problem statement: Answer the multiple choice question.
Query: Which compound has a -3.180% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=c1[nH]c2c(Br)cnc([N+](=O)[O-])c2[nH]1
(b) COC(=O)CC1(c2ccc(OC)cc2)C(=O)c2ccccc2C1=O
Answer: a. O=c1[nH]c2c(Br)cnc([N+](=O)[O-])c2[nH]1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=c1[nH]c2c(Br)cnc([N+](=O)[O-])c2[nH]1
O=c1[nH]c2c(Br)cnc([N+](=O)[O-])c2[nH]1
7-bromo-4-nitro-1,3-dihydroimidazo[4,5-c]pyridin-2-one