Task: Answer the multiple-choice question.
Query: Which compound has a 20.728\% 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=c1[nH]c2ccccc2c(O)c1-c1cc2ccccc2oc1=O
b. Cn1c(=O)c2c(ncn2CCOc2ccc(F)cc2)n(C)c1=O
c. CCN(CC)S(=O)(=O)c1ccc(NC(=O)c2cnc(C)cn2)cc1
d. Cn1c(NNC(=O)CCC2CCCCC2)cc(=O)n(C)c1=O
Answer: b. Cn1c(=O)c2c(ncn2CCOc2ccc(F)cc2)n(C)c1=O
{#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#}
Cn1c(=O)c2c(ncn2CCOc2ccc(F)cc2)n(C)c1=O
Cn1c(=O)c2c(ncn2CCOc2ccc(F)cc2)n(C)c1=O
7-[2-(4-fluorophenoxy)ethyl]-1,3-dimethylpurine-2,6-dione