Task: Answer the MCQ question.
Question: Which compound exhibits a -18.132\% 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. Cc1nc([N+](=O)[O-])c(Sc2nc3ccc([N+](=O)[O-])cc3[nH]2)n1Cc1ccccc1
b. CCOC(=O)CNS(=O)(=O)c1cc(-c2nnc(Nc3ccc4c(c3)OCO4)c3ccccc23)ccc1C
Answer: a. Cc1nc([N+](=O)[O-])c(Sc2nc3ccc([N+](=O)[O-])cc3[nH]2)n1Cc1ccccc1
{#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#}
Cc1nc([N+](=O)[O-])c(Sc2nc3ccc([N+](=O)[O-])cc3[nH]2)n1Cc1ccccc1
Cc1nc([N+](=O)[O-])c(Sc2nc3ccc([N+](=O)[O-])cc3[nH]2)n1Cc1ccccc1
2-(3-benzyl-2-methyl-5-nitroimidazol-4-yl)sulfanyl-6-nitro-1H-benzimidazole