You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4Z)-4-[[2-[(4-fluorophenyl)methoxy]phenyl]methylidene]-2-naphthalen-2-yl-1,3-oxazol-5-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H18FNO3
assistant