Task: Answer the multiple-choice question.
Question: Which drug has a 2.111\% 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 or b without using any other words.
Options:
a: O=C1Nc2ccc([N+](=O)[O-])cc2C1(O)N1CCCCC1
b: CC(C)C(c1nnnn1Cc1ccccc1)N1CCN(Cc2ccco2)CC1.Cl
Answer: a. O=C1Nc2ccc([N+](=O)[O-])cc2C1(O)N1CCCCC1
{#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=C1Nc2ccc([N+](=O)[O-])cc2C1(O)N1CCCCC1
O=C1Nc2ccc([N+](=O)[O-])cc2C1(O)N1CCCCC1
(3-hydroxy-2-oxo-3-piperidin-1-yl-1H-indol-5-yl)-oxido-oxoazanium