You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethanol;ethyl 6-formyl-4-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]pyridine-2-carboxylate;molecular hydrogen The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H30N2O7
assistant