Task: Answer the MCQ question.
Query: Which compound exhibits a -2.748% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a O=C(COC(=O)c1cc([N+](=O)[O-])ccc1N1CCOCC1)c1ccccc1Cl
b CCOC(=O)c1nnn(CC(=O)NC(=O)Nc2ccc(F)cc2)c1C(=O)OCC
c CCCn1c(=O)[nH]c(=O)c2[nH]cnc21
d Cc1ccc(F)cc1NC(=O)Cc1nn(C)c(=O)c2ccccc12
Answer: a. O=C(COC(=O)c1cc([N+](=O)[O-])ccc1N1CCOCC1)c1ccccc1Cl
{#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#}
O=C(COC(=O)c1cc([N+](=O)[O-])ccc1N1CCOCC1)c1ccccc1Cl
O=C(COC(=O)c1cc([N+](=O)[O-])ccc1N1CCOCC1)c1ccccc1Cl
[2-(2-chlorophenyl)-2-oxoethyl] 2-morpholin-4-yl-5-nitrobenzoate