Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 3.091\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a. CC(=O)c1cc2cc(O)ccc2o1
b. COc1ccccc1NS(=O)(=O)c1cccc(C(=O)N2CCCCCCC2)c1
c. CCn1c(CNC(=O)c2ccco2)nnc1SCC(=O)Nc1ccccc1Cl
Answer: a. CC(=O)c1cc2cc(O)ccc2o1
{#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#}
CC(=O)c1cc2cc(O)ccc2o1
CC(=O)c1cc2cc(O)ccc2o1
1-(5-hydroxy-1-benzofuran-2-yl)ethanone