Task: Answer the multiple choice question.
Query: Which drug exhibits a 2.459\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: COc1ccc(CNc2cc([N+](=O)[O-])ccc2OC)cc1
b: O=C1N/C(=N\N=C\c2cccs2)SC1Cc1ccc(Cl)cc1Cl
c: CCCNC(=O)c1ccc(N2CCC3(CC2)CC(c2cccc(Br)c2)=NO3)c([N+](=O)[O-])c1
Answer: a. COc1ccc(CNc2cc([N+](=O)[O-])ccc2OC)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#}
COc1ccc(CNc2cc([N+](=O)[O-])ccc2OC)cc1
COc1ccc(CNc2cc([N+](=O)[O-])ccc2OC)cc1
2-methoxy-N-[(4-methoxyphenyl)methyl]-5-nitroaniline