Task: Answer the multiple choice question.
Question: Which compound exhibits a -2.055\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CCNC(=O)CC1C(=O)N(c2ccccc2)C(=O)N1CCc1ccc(OC)cc1
[b] COC(=O)c1c(C)c(C)nc(N)c1C#N
Answer: a. CCNC(=O)CC1C(=O)N(c2ccccc2)C(=O)N1CCc1ccc(OC)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#}
CCNC(=O)CC1C(=O)N(c2ccccc2)C(=O)N1CCc1ccc(OC)cc1
CCNC(=O)CC1C(=O)N(c2ccccc2)C(=O)N1CCc1ccc(OC)cc1
N-ethyl-2-[3-[2-(4-methoxyphenyl)ethyl]-2,5-dioxo-1-phenylimidazolidin-4-yl]acetamide