Task: Answer the multiple choice question.
Question: Which compound has a 2.423\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a. CC(C)OC(=O)CC(=O)CSc1nc2c(cc1C#N)CCCC2
b. COC(=O)c1ccc(NC(=S)NC(=O)c2cc(-c3ccccc3)nc3ccccc23)cc1
c. CCc1cc(=O)oc2cc(C)cc(OCc3nn[nH]n3)c12
Answer: c. CCc1cc(=O)oc2cc(C)cc(OCc3nn[nH]n3)c12
{#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#}
4-ethyl-7-methyl-5-(2H-tetrazol-5-ylmethoxy)chromen-2-one