You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(1S)-6,7-dimethoxy-2-(morpholine-4-carbonyl)-3,4-dihydro-1H-isoquinolin-1-yl]-6,7-dimethyl-1H-quinolin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H31N3O5
assistant