Problem statement: Answer the multiple choice question.
Query: Which compound has a 26.451\% 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 other words.
Options:
(a) COc1ccc(-n2[nH]c(C)cc2=O)cc1
(b) O=[N+]([O-])c1ccc2c(c1)C(N1CCOCC1)/C(=C/COc1ccc(Cl)cc1Cl)O2
(c) CCCN(C(=O)c1ccc(N2CCCC2=O)cc1)C1CCS(=O)(=O)C1
Answer: a. COc1ccc(-n2[nH]c(C)cc2=O)cc1
{#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#}
COc1ccc(-n2[nH]c(C)cc2=O)cc1
COc1ccc(-n2[nH]c(C)cc2=O)cc1
2-(4-methoxyphenyl)-5-methyl-1H-pyrazol-3-one