Task: Answer the MCQ question.
Query: Which drug exhibits a 13.300\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: CC(C)CN1CCN(Cc2ccc(CN3CCCCC3)s2)CC1CCO
b: COc1ccc(CCNC(=O)Nc2cccc([N+](=O)[O-])c2)cc1
Answer: b. COc1ccc(CCNC(=O)Nc2cccc([N+](=O)[O-])c2)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(CCNC(=O)Nc2cccc([N+](=O)[O-])c2)cc1
COc1ccc(CCNC(=O)Nc2cccc([N+](=O)[O-])c2)cc1
1-[2-(4-methoxyphenyl)ethyl]-3-(3-nitrophenyl)urea