Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a -1.749\% human ether-à-go-go related gene (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=[N+]([O-])c1ccc2c(c1)nc1n2CCN(C2CCCCC2)C1
[b] CCC(C)n1c(C)nc2c(c1=O)c1nc3ccccc3nc1n2CCC1=CCCCC1
[c] CC(=O)NC(C)C(=O)OCC(=O)Nc1ccc(Br)cc1
Answer: a. O=[N+]([O-])c1ccc2c(c1)nc1n2CCN(C2CCCCC2)C1
{#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=[N+]([O-])c1ccc2c(c1)nc1n2CCN(C2CCCCC2)C1
O=[N+]([O-])c1ccc2c(c1)nc1n2CCN(C2CCCCC2)C1
(2-cyclohexyl-3,4-dihydro-1H-pyrazino[1,2-a]benzimidazol-8-yl)-oxido-oxoazanium