You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl 4-[1-(2,5-dioxo-1,4-dihydroimidazo[4,5-b]pyridin-3-yl)ethyl]cyclohexane-1-carboxylate .
user
C16H21N3O4
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