Task: Answer the MCQ question.
Query: Which compound has a 4.589\% 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 or b without using any other words.
Options:
[a] CCOC(=O)c1c(NC(=O)CSc2ncnc3ccccc23)sc(C)c1C
[b] COc1cccc(NC(=O)C(Sc2nc3ccccc3c(=O)n2CC(C)C)c2ccccc2)c1
Answer: a. CCOC(=O)c1c(NC(=O)CSc2ncnc3ccccc23)sc(C)c1C
{#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)c1c(NC(=O)CSc2ncnc3ccccc23)sc(C)c1C
CCOC(=O)c1c(NC(=O)CSc2ncnc3ccccc23)sc(C)c1C
ethyl 4,5-dimethyl-2-[(2-quinazolin-4-ylsulfanylacetyl)amino]thiophene-3-carboxylate