Task: Answer the multiple choice question.
Query: Which compound exhibits a 21.102\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=C(NCC(=O)N1CCCCC1)c1ccc2ccccc2c1
b: Cc1ccc2c(c1)N(CC(=O)NCCc1ccc(Cl)cc1)C(=O)c1cccnc1O2
Answer: a. O=C(NCC(=O)N1CCCCC1)c1ccc2ccccc2c1
{#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(NCC(=O)N1CCCCC1)c1ccc2ccccc2c1
O=C(NCC(=O)N1CCCCC1)c1ccc2ccccc2c1
N-(2-oxo-2-piperidin-1-ylethyl)naphthalene-2-carboxamide