Task: Answer the MCQ question.
Query: Which compound exhibits a 16.140\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
(a) O=c1[nH]c2cc(NCCO)c([N+](=O)[O-])cc2[nH]1
(b) COc1cc(S(=O)(=O)N(C)Cc2ccc3c(c2)OCCO3)ccc1NC(C)=O
(c) COc1cc(NC(=O)CN2C(=O)CSc3ccc(S(=O)(=O)N4CCCC4)cc32)cc(OC)c1
(d) COc1ccc(OCc2nnc(SCC(=O)N3CCCc4ccccc43)n2-c2ccc(C)cc2)cc1
(e) S=C(Nc1ccc(Cl)cc1)NN1CCOCC1
Answer: a. O=c1[nH]c2cc(NCCO)c([N+](=O)[O-])cc2[nH]1
{#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#}
O=c1[nH]c2cc(NCCO)c([N+](=O)[O-])cc2[nH]1
O=c1[nH]c2cc(NCCO)c([N+](=O)[O-])cc2[nH]1
5-(2-hydroxyethylamino)-6-nitro-1,3-dihydrobenzimidazol-2-one