You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[2-chloro-4-[[2-(4,4-difluorocyclohexyl)cyclopenten-1-yl]methoxy]phenyl]butan-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H27ClF2O2
assistant