Task: Answer the multiple choice question.
Question: Which compound exhibits a 13.599\% 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=c1[nH]c(O)c(N=Nc2cccc(S(=O)(=O)N3CCOCC3)c2)c(=O)[nH]1
b: CCOc1ccccc1Nc1cc2n(c(=O)n1)CCc1cc(OC)c(OC)cc1-2
Answer: b. CCOc1ccccc1Nc1cc2n(c(=O)n1)CCc1cc(OC)c(OC)cc1-2
{#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#}
CCOc1ccccc1Nc1cc2n(c(=O)n1)CCc1cc(OC)c(OC)cc1-2
CCOc1ccccc1Nc1cc2n(c(=O)n1)CCc1cc(OC)c(OC)cc1-2
2-(2-ethoxyanilino)-9,10-dimethoxy-6,7-dihydropyrimido[6,1-a]isoquinolin-4-one