Task: Answer the multiple-choice question.
Question: Which drug has a 21.001% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) Nc1nonc1-c1nc2ccccc2n1CC(=O)N1CCCCC1
(b) CCN(Cc1ccccc1)C(=O)C1CCC(CNc2c(N3CCOCC3)c(=O)c2=O)CC1
Answer: a. Nc1nonc1-c1nc2ccccc2n1CC(=O)N1CCCCC1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
Nc1nonc1-c1nc2ccccc2n1CC(=O)N1CCCCC1
Nc1nonc1-c1nc2ccccc2n1CC(=O)N1CCCCC1
2-[2-(4-amino-1,2,5-oxadiazol-3-yl)benzimidazol-1-yl]-1-piperidin-1-ylethanone