Task: Answer the multiple-choice question.
Question: Which drug has a -27.213% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: Cc1ccc(CNC(=O)CCc2c(C)nc3ncnn3c2C)cc1
b: O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCCC2
c: CC(=O)c1cccc(NC(=O)Cc2coc3cc4c(cc23)CCC4)c1
Answer: b. O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCCC2
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCCC2
O=[n+]1c2c(n([O-])c3cc(Br)ccc31)CCCC2
8-bromo-10-oxido-1,2,3,4-tetrahydrophenazin-5-ium 5-oxide