Task: Answer the multiple-choice question.
Question: Which compound exhibits a -2.740\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) COc1ccc(-c2ccc(-c3nnn(CC(=O)N4CCOCC4)n3)cc2)cc1
(b) Cl.OCCNCc1ccc(OCc2ccc(Cl)cc2Cl)cc1
Answer: a. COc1ccc(-c2ccc(-c3nnn(CC(=O)N4CCOCC4)n3)cc2)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#}
2-[5-[4-(4-methoxyphenyl)phenyl]tetrazol-2-yl]-1-morpholin-4-ylethanone