Task: Answer the multiple-choice question.
Query: Which compound exhibits a 2.260\% 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.) CCCCN(CCCC)C1=Nc2ccccc2N/C1=C(/C#N)C(=O)OCC
b.) c1ccc2c(-c3csc(-c4ccncc4)n3)c[nH]c2c1
Answer: a. CCCCN(CCCC)C1=Nc2ccccc2N/C1=C(/C#N)C(=O)OCC
{#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#}
ethyl(2Z)-2-cyano-2-[3-(dibutylamino)-1H-quinoxalin-2-ylidene]acetate