Task: Answer the MCQ question.
Query: Which compound exhibits a -6.167\% 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 additional words.
Options:
a CCS(=O)(=O)NCCNc1ccc([N+](=O)[O-])cc1
b CCCCn1c(SCC(=O)N2CCCC2)nc2c1c(=O)n(C)c(=O)n2C
c Cn1nc([N+](=O)[O-])c(C(C#N)c2ccccn2)c(Cl)c1=O
d O=C(O)C1CC(c2ccc(F)cc2)=NO1
Answer: b. CCCCn1c(SCC(=O)N2CCCC2)nc2c1c(=O)n(C)c(=O)n2C
{#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#}
7-butyl-1,3-dimethyl-8-(2-oxo-2-pyrrolidin-1-ylethyl)sulfanylpurine-2,6-dione