Task: Answer the MCQ question.
Query: Which compound has a 3.640\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. O=C(CSc1nc2ccccc2[nH]1)N/N=C/C=C/c1ccccc1[N+](=O)[O-]
b. COc1ccccc1NC(=O)CSc1ccc(-c2cccs2)nn1
Answer: a. O=C(CSc1nc2ccccc2[nH]1)N/N=C/C=C/c1ccccc1[N+](=O)[O-]
{#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(CSc1nc2ccccc2[nH]1)N/N=C/C=C/c1ccccc1[N+](=O)[O-]
O=C(CSc1nc2ccccc2[nH]1)N/N=C/C=C/c1ccccc1[N+](=O)[O-]
2-(1H-benzimidazol-2-ylsulfanyl)-N-[(E)-[(E)-3-(2-nitrophenyl)prop-2-enylidene]amino]acetamide