Task: Answer the MCQ question.
Query: Which compound exhibits a -1.813\% 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] COC(=O)c1c(NC(=O)c2cccc(N3C(=O)CCC3=O)c2)sc2c1CCN(C(C)=O)C2
[b] O=C(Nc1ccc(Cl)cc1)OCCn1nnnc1C(c1ccccc1)N1CCOCC1
Answer: b. O=C(Nc1ccc(Cl)cc1)OCCn1nnnc1C(c1ccccc1)N1CCOCC1
{#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-chloroanilino)-[2-[5-[morpholin-4-yl(phenyl)methyl]tetrazol-1-yl]ethoxy]methanone