Problem statement: Answer the MCQ question.
Question: Which compound has a 2.726\% 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) COc1ccc(CC2c3cc(OC)c(OC)cc3CCN2C)cc1OC
(b) CCOC(=O)N1CCN(c2c(NCCN3CCN(c4ccccc4F)CC3)c(=O)c2=O)CC1
Answer: b. CCOC(=O)N1CCN(c2c(NCCN3CCN(c4ccccc4F)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(NCCN3CCN(c4ccccc4F)CC3)c(=O)c2=O)CC1
CCOC(=O)N1CCN(c2c(NCCN3CCN(c4ccccc4F)CC3)c(=O)c2=O)CC1
ethyl 4-[2-[2-[4-(2-fluorophenyl)piperazin-1-yl]ethylamino]-3,4-dioxocyclobuten-1-yl]piperazine-1-carboxylate