You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(E)-3-[3-[3-[(E)-3-[4-(trifluoromethyl)phenyl]prop-2-enoxy]phenoxy]phenyl]prop-2-enoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H19F3O4
assistant