Problem statement: Answer the MCQ question.
Question: Which compound exhibits a 20.794\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=CC1=C(N2CCOCC2)/C(=C\c2ccccc2)CC1
(b) Nc1ccc(S(=O)(=O)N2CCOCCOCCOCCOCCOCC2)cc1
Answer: a. O=CC1=C(N2CCOCC2)/C(=C\c2ccccc2)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#}
O=CC1=C(N2CCOCC2)/C(=C\c2ccccc2)CC1
O=CC1=C(N2CCOCC2)/C(=C\c2ccccc2)CC1
(3Z)-3-benzylidene-2-morpholin-4-ylcyclopentene-1-carbaldehyde