Task: Answer the multiple-choice question.
Query: Which drug exhibits a -1.396\% 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: Cc1cc(=O)n2c3ccccc3n(CC(O)CN3CCN(CCO)CC3)c2c1C#N
b: COc1ccccc1/C=C\C=N\NC(=O)c1ccco1
Answer: a. Cc1cc(=O)n2c3ccccc3n(CC(O)CN3CCN(CCO)CC3)c2c1C#N
{#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#}
Cc1cc(=O)n2c3ccccc3n(CC(O)CN3CCN(CCO)CC3)c2c1C#N
Cc1cc(=O)n2c3ccccc3n(CC(O)CN3CCN(CCO)CC3)c2c1C#N
5-[2-hydroxy-3-[4-(2-hydroxyethyl)piperazin-1-yl]propyl]-3-methyl-1-oxopyrido[1,2-a]benzimidazole-4-carbonitrile