Task: Answer the multiple-choice question.
Question: Which drug exhibits a -3.353\% 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)CSc1nc(N)nc(C)c1Br
b: Cc1cc(S(=O)(=O)NCc2ccccc2)ccc1OCC(=O)N1CCCC1
Answer: a. CCOC(=O)CSc1nc(N)nc(C)c1Br
{#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)CSc1nc(N)nc(C)c1Br
CCOC(=O)CSc1nc(N)nc(C)c1Br
ethyl 2-(2-amino-5-bromo-6-methylpyrimidin-4-yl)sulfanylacetate