You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-amino-3-methyl-6-pyridin-3-ylhexyl)-6,7-dimethoxy-3,4-dihydroisoquinolin-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H31N3O3
assistant