Task: Answer the multiple choice question.
Question: Which compound exhibits a -20.591\% 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) CCOC(=O)C(NC(C)=O)C(=O)Nc1ccc(C)cc1C
(b) CCn1ncc([N+](=O)[O-])c1C(=O)Nc1c(C)nn(Cc2ccc(F)cc2)c1C
(c) Cc1nnc(SCCn2c(N(C)Cc3ccccc3)nc3c2c(=O)[nH]c(=O)n3C)s1
(d) Cl.O=C(N1CCN(Cc2ccccc2)CC1)C12CC3CC(CC(C3)C1)C2
(e) CCOc1ccc2nc(NC(=O)CN3CCN(CC)CC3)sc2c1
Answer: b. CCn1ncc([N+](=O)[O-])c1C(=O)Nc1c(C)nn(Cc2ccc(F)cc2)c1C
{#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#}
CCn1ncc([N+](=O)[O-])c1C(=O)Nc1c(C)nn(Cc2ccc(F)cc2)c1C
CCn1ncc([N+](=O)[O-])c1C(=O)Nc1c(C)nn(Cc2ccc(F)cc2)c1C
2-ethyl-N-[1-[(4-fluorophenyl)methyl]-3,5-dimethylpyrazol-4-yl]-4-nitropyrazole-3-carboxamide