Task: Answer the MCQ question.
Question: Which compound exhibits a 5.688\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CC1CCN(S(=O)(=O)c2ccc3[nH]c(=O)ccc3c2)CC1
b: CCOC(=O)N1CCN(c2c(N3CCN(c4ccccc4OC)CC3)c(=O)c2=O)CC1
Answer: b. CCOC(=O)N1CCN(c2c(N3CCN(c4ccccc4OC)CC3)c(=O)c2=O)CC1
{#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)N1CCN(c2c(N3CCN(c4ccccc4OC)CC3)c(=O)c2=O)CC1
CCOC(=O)N1CCN(c2c(N3CCN(c4ccccc4OC)CC3)c(=O)c2=O)CC1
ethyl 4-[2-[4-(2-methoxyphenyl)piperazin-1-yl]-3,4-dioxocyclobuten-1-yl]piperazine-1-carboxylate