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 2-(1-benzofuran-2-yl)-6-[(4-methoxyphenyl)methyl]-7,8-dihydropyrimido[5,4-f][1,4]oxazepin-5-one ?
user
C23H19N3O4
assistant