You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[5-(7-oxo-6H-imidazo[4,5-b]pyridin-3-yl)oxolan-2-yl]methyl 2-[2-(2-methoxyethoxy)ethoxy]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H25N3O7
assistant