Task: Answer the multiple-choice question.
Query: Which compound exhibits a 0.419\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(OCc1ccccn1)C1CCN(C(=O)c2ccc(Cl)cc2)CC1
[b] COc1cccc(-c2cc(C(=O)Nc3ccc4c(c3)OCO4)no2)c1
Answer: a. O=C(OCc1ccccn1)C1CCN(C(=O)c2ccc(Cl)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#}
O=C(OCc1ccccn1)C1CCN(C(=O)c2ccc(Cl)cc2)CC1
O=C(OCc1ccccn1)C1CCN(C(=O)c2ccc(Cl)cc2)CC1
pyridin-2-ylmethyl 1-(4-chlorobenzoyl)piperidine-4-carboxylate