Task: Answer the multiple-choice question.
Question: Which compound exhibits a 7.276\% 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=c1ccc2cc(S(=O)(=O)N3CCN(c4ccccc4)CC3)ccc2o1
b: CCOC(=O)c1c(N)sc(N)c1C(=O)OCC
Answer: b. CCOC(=O)c1c(N)sc(N)c1C(=O)OCC
{#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)c1c(N)sc(N)c1C(=O)OCC
CCOC(=O)c1c(N)sc(N)c1C(=O)OCC
diethyl 2,5-diaminothiophene-3,4-dicarboxylate