Task: Answer the multiple-choice question.
Query: Which compound exhibits a 0.789\% 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(Nc1nc2ccccc2[nH]1)c1ccccc1[N+](=O)[O-]
[b] Cc1cc(Cl)cc(C)c1OCCNCc1ccccc1.O=C(O)C(=O)O
Answer: a. O=C(Nc1nc2ccccc2[nH]1)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(Nc1nc2ccccc2[nH]1)c1ccccc1[N+](=O)[O-]
O=C(Nc1nc2ccccc2[nH]1)c1ccccc1[N+](=O)[O-]
N-(1H-benzimidazol-2-yl)-2-nitrobenzamide