Task: Answer the MCQ question.
Question: Which compound has a -0.888\% 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) CCOC(=O)CSc1ccc2nnc(-c3cccnc3)n2n1
(b) O=S(=O)(c1ccccc1)N1CCN(c2nnnn2-c2ccccc2)CC1
Answer: a. CCOC(=O)CSc1ccc2nnc(-c3cccnc3)n2n1
{#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#}
CCOC(=O)CSc1ccc2nnc(-c3cccnc3)n2n1
CCOC(=O)CSc1ccc2nnc(-c3cccnc3)n2n1
ethyl 2-[(3-pyridin-3-yl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)sulfanyl]acetate