Task: Answer the multiple-choice question.
Query: Which drug exhibits a 8.541\% 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 COc1cccc(CN2CCN(C3CCN(c4cccc(C)c4C)CC3)CC2CCO)c1
b CCC(C)Nc1nc2c(c(=O)n(C)c(=O)n2C)n1Cc1ccc(F)cc1
c Cc1cc(C)n(C(=O)COc2ccc([N+](=O)[O-])cc2)n1
d CCOC(=O)C1CCCN(C(=O)c2ccc([N+](=O)[O-])c(C)c2)C1
Answer: b. CCC(C)Nc1nc2c(c(=O)n(C)c(=O)n2C)n1Cc1ccc(F)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#}
8-(butan-2-ylamino)-7-[(4-fluorophenyl)methyl]-1,3-dimethylpurine-2,6-dione