You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-N,3-dimethylbenzene-1,2-diamine;3-[3-[(2-ethyl-3,5-dihydro-2H-1,4-benzoxazepin-4-yl)methyl]-4-methylphenyl]-2-methylpropanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H41N3O3
assistant