Task: Answer the multiple choice question.
Question: Which compound has a 18.761\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
(a) O=c1nc2n(c3cc(Cl)c(S(=O)(=O)N4CCOCC4)cc13)CCCCC2
(b) COc1ccc(NC(=O)CCCC(=O)O)cc1Cl
(c) O=C(NC1=NC2CCCCC2N1)c1ccccc1
Answer: a. O=c1nc2n(c3cc(Cl)c(S(=O)(=O)N4CCOCC4)cc13)CCCCC2
{#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#}
2-chloro-3-morpholin-4-ylsulfonyl-8,9,10,11-tetrahydro-7H-azepino[1,2-a]quinazolin-5-one