Problem statement: Answer the MCQ question.
Query: Which drug exhibits a -2.820% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
[a] CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
[b] O=C1C=C(c2ccc(-c3ccccc3)cc2)C[C@@H](c2ccc(Cl)cc2)C1
[c] Cc1ccc(NC(=O)C2C3/C=C\CCCCC32)cc1
[d] O=C(COC(=O)c1cc(-c2cccs2)nn1-c1ccccc1)Nc1cc([N+](=O)[O-])ccc1Cl
[e] COc1ccccc1N1CCN(C(c2cccs2)C(C)NS(=O)(=O)c2ccccc2)CC1
Answer: a. CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
CCOC(=O)COn1c(=O)c[n+]([O-])c2ccccc21
ethyl 2-(4-oxido-2-oxoquinoxalin-4-ium-1-yl)oxyacetate