Task: Answer the multiple choice question.
Query: Which drug exhibits a -0.498\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=C(Cn1cc([N+](=O)[O-])ccc1=O)NCC1COc2ccccc2O1
b: CCOC(=O)c1cc2cc3ccccc3cc2oc1=O
Answer: a. O=C(Cn1cc([N+](=O)[O-])ccc1=O)NCC1COc2ccccc2O1
{#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(Cn1cc([N+](=O)[O-])ccc1=O)NCC1COc2ccccc2O1
O=C(Cn1cc([N+](=O)[O-])ccc1=O)NCC1COc2ccccc2O1
N-(2,3-dihydro-1,4-benzodioxin-3-ylmethyl)-2-(5-nitro-2-oxopyridin-1-yl)acetamide