Task: Answer the MCQ question.
Query: Which compound has a 20.921% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: Cc1c(NC(=O)CN2CCN(c3cccc(Cl)c3)CC2)c(=O)n(-c2ccccc2)n1C
b: Cc1cccc(CCNC(=O)CC2C(=O)NCCN2CC2CCCCC2)n1
c: Cn1c(=O)c2nc(-c3ccccc3)oc2c2ccccc21
Answer: b. Cc1cccc(CCNC(=O)CC2C(=O)NCCN2CC2CCCCC2)n1
{#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#}
Cc1cccc(CCNC(=O)CC2C(=O)NCCN2CC2CCCCC2)n1
Cc1cccc(CCNC(=O)CC2C(=O)NCCN2CC2CCCCC2)n1
2-[1-(cyclohexylmethyl)-3-oxopiperazin-2-yl]-N-[2-(6-methylpyridin-2-yl)ethyl]acetamide