Task: Answer the multiple choice question.
Query: Which compound exhibits a 20.138\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCOC(=O)Cc1nn[nH]n1
b: CCOc1ccccc1OCCC(=O)OCC(=O)Nc1c(C)cc(C)cc1C
c: Cc1onc(-c2ccc(Cl)cc2Cl)c1C(=O)/C=C/N(C)C
d: O=C(NC(=S)Nc1ccc2c(c1)OCO2)c1ccc(Cl)cc1
Answer: a. CCOC(=O)Cc1nn[nH]n1
{#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#}
CCOC(=O)Cc1nn[nH]n1
CCOC(=O)Cc1nn[nH]n1
ethyl 2-(2H-tetrazol-5-yl)acetate