You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 5-[[(4Z)-4-[[3-chloro-5-methoxy-4-(2-methoxy-2-oxoethoxy)phenyl]methylidene]-2,5-dioxoimidazolidin-1-yl]methyl]furan-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H19ClN2O9
assistant