Task: Answer the MCQ question.
Query: Which compound exhibits a 2.591\% 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, c, or d without using any other words.
Options:
[a] COc1ccc2c(COC(=O)CCS(=O)(=O)c3ccc(C)cc3)cc(=O)oc2c1
[b] COc1ccc(CC(=O)OCc2cc3ccccc3[nH]c2=O)cc1
[c] COC(=O)c1cc(C(=O)Nc2ccc(S(N)(=O)=O)cc2)cc([N+](=O)[O-])c1
[d] O=c1cc(-c2ccc(Cl)cc2)oc(=O)[nH]1
Answer: a. COc1ccc2c(COC(=O)CCS(=O)(=O)c3ccc(C)cc3)cc(=O)oc2c1
{#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#}
COc1ccc2c(COC(=O)CCS(=O)(=O)c3ccc(C)cc3)cc(=O)oc2c1
COc1ccc2c(COC(=O)CCS(=O)(=O)c3ccc(C)cc3)cc(=O)oc2c1
(7-methoxy-2-oxochromen-4-yl)methyl 3-(4-methylphenyl)sulfonylpropanoate