Problem statement: Answer the MCQ question.
Query: Which drug has a 13.563\% 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) COc1ccc(-n2ncc3c(NCc4ccccn4)ncnc32)cc1
(b) Nc1ncnc(Oc2ccccc2F)c1[N+](=O)[O-]
Answer: b. Nc1ncnc(Oc2ccccc2F)c1[N+](=O)[O-]
{#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#}
6-(2-fluorophenoxy)-5-nitropyrimidin-4-amine