Task: Answer the MCQ question.
Query: Which drug has a 21.968% hERG inhibition at 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=C(CSc1nc2ncccc2[nH]1)Nc1c(F)cc(F)cc1Br
(b) CN(CCO)c1cnccn1
Answer: b. CN(CCO)c1cnccn1
{#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#}
CN(CCO)c1cnccn1
CN(CCO)c1cnccn1
2-[methyl(pyrazin-2-yl)amino]ethanol