Task: Answer the MCQ question.
Query: Which compound exhibits a -2.303% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CCCCOCCCNC(=O)c1ccc(NC(C)=O)cc1
[b] CCCCNC(=O)c1c(O)c2cccc3c2n(c1=O)CCC3
Answer: b. CCCCNC(=O)c1c(O)c2cccc3c2n(c1=O)CCC3
{#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#}
CCCCNC(=O)c1c(O)c2cccc3c2n(c1=O)CCC3
CCCCNC(=O)c1c(O)c2cccc3c2n(c1=O)CCC3
N-butyl-4-hydroxy-2-oxo-1-azatricyclo[7.3.1.05,13]trideca-3,5,7,9(13)-tetraene-3-carboxamide