You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 4-(3-carbamoyl-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridin-4-yl)-3-methoxybenzenecarboximidate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26N4O4
assistant