Task: Answer the multiple choice question.
Question: Which compound exhibits a 13.767\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] O=C(c1cccc([N+](=O)[O-])c1)C12CN3CN(CN(C3)C1)C2
[b] CCCCN(C(=O)CCCc1nc2ccccc2s1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
[c] CCCNC(=O)C1CC(=O)N(c2ccc(OCc3ccc(Cl)cc3)cc2)C1
Answer: a. O=C(c1cccc([N+](=O)[O-])c1)C12CN3CN(CN(C3)C1)C2
{#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#}
O=C(c1cccc([N+](=O)[O-])c1)C12CN3CN(CN(C3)C1)C2
O=C(c1cccc([N+](=O)[O-])c1)C12CN3CN(CN(C3)C1)C2
oxido-oxo-[3-(1,3,5-triazatricyclo[3.3.1.13,7]decane-7-carbonyl)phenyl]azanium