Task: Answer the MCQ question.
Query: Which compound has a 12.889\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. Nc1nonc1-c1noc(N2CCOCC2)n1
b. Fc1ccccc1-c1nc(-c2ccccc2)no1
Answer: a. Nc1nonc1-c1noc(N2CCOCC2)n1
{#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#}
Nc1nonc1-c1noc(N2CCOCC2)n1
Nc1nonc1-c1noc(N2CCOCC2)n1
4-(5-morpholin-4-yl-1,2,4-oxadiazol-3-yl)-1,2,5-oxadiazol-3-amine