You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[2-methyl-4-[2-methyl-3-[2-phenoxy-4-(trifluoromethyl)phenoxy]propoxy]phenyl]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H27F3O5
assistant