You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[7-[[ethyl(methyl)amino]methyl]-3,4-dihydro-1H-isoquinolin-2-yl]-5,6,7-trimethoxy-3H-quinazolin-4-one by IUPAC nomenclature, provide its molecular formula.
user
C24H30N4O4
assistant