Task: Answer the MCQ question.
Question: Which compound exhibits a 0.321\% 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) CCOc1ccccc1C(=O)N1CCN=C1SCc1cccnc1
(b) O=c1c(-c2nnc(SCc3ccc(Cl)c(Cl)c3)o2)cccn1Cc1ccccc1
Answer: a. CCOc1ccccc1C(=O)N1CCN=C1SCc1cccnc1
{#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#}
(2-ethoxyphenyl)-[2-(pyridin-3-ylmethylsulfanyl)-4,5-dihydroimidazol-1-yl]methanone