Task: Answer the multiple-choice question.
Query: Which compound has a 1.150\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CCOC(=O)C(C)/C(C)=N/NC(=O)CCC(=O)Nc1cc(C)ccc1C
b: CCN1CCN(c2cc(N3CCCC3)c([N+](=O)[O-])cc2F)CC1
c: COc1cccc2c(Cl)c(CC=C(Cl)Cl)c(C)nc12
d: Cc1cc(C)c(C)c(S(=O)(=O)NCc2cccnc2)c1C
Answer: b. CCN1CCN(c2cc(N3CCCC3)c([N+](=O)[O-])cc2F)CC1
{#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#}
1-ethyl-4-(2-fluoro-4-nitro-5-pyrrolidin-1-ylphenyl)piperazine