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 (3S)-N-(furan-2-ylmethyl)-3-methyl-7-(pyrrolidine-1-carbonyl)-3,5-dihydro-2H-1,4-benzoxazepine-4-carboxamide ?
user
C21H25N3O4
assistant