Task: Answer the multiple-choice question.
Query: Which drug exhibits a -15.196\% 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, or d without using any other words.
Options:
a O=C(Nc1cccc(Cl)c1)c1ccc2c(c1)OCCO2
b CCc1nnc(NC(=O)c2ccc(S(=O)(=O)N(CCOC)CCOC)cc2)s1
c CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(C)c([N+](=O)[O-])c1)n2CC
d O=C(/C(C=Nc1ccc(F)cc1)=C(/O)c1ccco1)C(F)(F)F
Answer: c. CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(C)c([N+](=O)[O-])c1)n2CC
{#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#}
CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(C)c([N+](=O)[O-])c1)n2CC
CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(C)c([N+](=O)[O-])c1)n2CC
3-butyl-7-ethyl-8-(4-methyl-3-nitrophenyl)purine-2,6-dione