Task: Answer the multiple choice question.
Query: Which drug exhibits a 13.680\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a CCCCNC(=O)OCC(CC)NC(=O)OCC(C)C
b COc1cccc(N=Cc2ccc(O)cc2O)c1
c CCc1cc(CC)c(/C=N/NC(N)=O)c(CC)c1/C=N/NC(N)=O
Answer: a. CCCCNC(=O)OCC(CC)NC(=O)OCC(C)C
{#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#}
CCCCNC(=O)OCC(CC)NC(=O)OCC(C)C
CCCCNC(=O)OCC(CC)NC(=O)OCC(C)C
2-(2-methylpropoxycarbonylamino)butyl N-butylcarbamate