You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (7Z)-7-[(6-bromo-4H-1,3-benzodioxin-8-yl)methylidene]-3-[(2-chlorophenyl)methyl]-9-methyl-2,4-dihydrofuro[3,2-g][1,3]benzoxazin-6-one .
user
C27H21BrClNO5
assistant