Task: Answer the MCQ question.
Query: Which compound exhibits a 19.921% human ether-à-go-go related gene (hERG) inhibition at 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) COCCN(C(=O)Nc1ccccc1OC)c1nc2ccccc2s1
(b) c1ccc(Oc2c3ccccc3nc3ccccc23)cc1
Answer: a. COCCN(C(=O)Nc1ccccc1OC)c1nc2ccccc2s1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COCCN(C(=O)Nc1ccccc1OC)c1nc2ccccc2s1
COCCN(C(=O)Nc1ccccc1OC)c1nc2ccccc2s1
1-(1,3-benzothiazol-2-yl)-1-(2-methoxyethyl)-3-(2-methoxyphenyl)urea