You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-acetyl-6-[(3-fluorophenyl)methoxy]-1-[(3-methyl-1,2-oxazol-5-yl)methyl]-1,4-diazepan-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22FN3O4
assistant