Task: Answer the multiple-choice question.
Question: Which compound exhibits a -25.021\% human ether-à-go-go related gene (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=[N+]([O-])c1cccc(-c2nnc(SCc3cccnc3)o2)c1
(b) CCOC(=O)c1sc2sc(C(=O)OCC)c(CN3CC(C)OC(C)C3)c2c1CN1CC(C)OC(C)C1
(c) Cl.c1ccc(CC2CNc3ccccc3CN2)cc1
(d) COc1ccc([N+](=O)[O-])cc1N(CC(=O)N1CCN(Cc2ccccc2)CC1)S(C)(=O)=O
(e) COCc1cc(C)nc(N/N=C/c2ccc(Cl)c(Cl)c2)c1C#N
Answer: a. O=[N+]([O-])c1cccc(-c2nnc(SCc3cccnc3)o2)c1
{#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=[N+]([O-])c1cccc(-c2nnc(SCc3cccnc3)o2)c1
O=[N+]([O-])c1cccc(-c2nnc(SCc3cccnc3)o2)c1
2-(3-nitrophenyl)-5-(pyridin-3-ylmethylsulfanyl)-1,3,4-oxadiazole