You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (4S)-4-[(3,4-dihydro-2H-1,5-benzodioxepin-6-ylmethylamino)methyl]-3,4-dihydro-1H-quinolin-2-one ?
user
C20H22N2O3
assistant