Task: Answer the MCQ question.
Query: Which drug exhibits a 2.661\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a NC(=O)NCc1ccccc1Cl
b COC(=O)c1c(C)[nH]c(O)c1C=Nc1ccc(C(C)C)cc1
c CN(CC(=O)Nc1ccccc1Cl)C(=O)COC(=O)C1=COCCO1
d CN(C(=O)COC(=O)CN1C(=O)c2cccc([N+](=O)[O-])c2C1=O)c1ccccc1
Answer: c. CN(CC(=O)Nc1ccccc1Cl)C(=O)COC(=O)C1=COCCO1
{#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#}
CN(CC(=O)Nc1ccccc1Cl)C(=O)COC(=O)C1=COCCO1
CN(CC(=O)Nc1ccccc1Cl)C(=O)COC(=O)C1=COCCO1
[2-[[2-(2-chloroanilino)-2-oxoethyl]-methylamino]-2-oxoethyl]2,3-dihydro-1,4-dioxine-5-carboxylate