Task: Answer the multiple choice question.
Question: Which compound exhibits a 2.069\% 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 other words.
Options:
a: COc1ccccc1NC(=O)Nc1nc2ccc(S(N)(=O)=O)cc2s1
b: c1ccc(-c2noc(-c3cccnc3)n2)nc1
c: CC1=C(C(=O)OCc2ccccc2)C(c2ccc(Br)cc2)NC(=O)N1CCCCCC(=O)O
d: CCOC(=O)c1sc(NC(=O)CSc2nnnn2-c2ccc(C)cc2)c(C(=O)OCC)c1C
Answer: b. c1ccc(-c2noc(-c3cccnc3)n2)nc1
{#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#}
c1ccc(-c2noc(-c3cccnc3)n2)nc1
c1ccc(-c2noc(-c3cccnc3)n2)nc1
3-pyridin-2-yl-5-pyridin-3-yl-1,2,4-oxadiazole