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 (2E)-2-[(5-bromo-2-methoxyphenyl)methylidene]-8-[2-(4-fluorophenyl)ethyl]-4-methyl-7,9-dihydrofuro[2,3-f][1,3]benzoxazin-3-one .
user
C27H23BrFNO4
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