You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[(Z,3R)-1,4,4,4-tetrafluoro-3-(3,4,5-trichlorophenyl)but-1-enyl]-2-(trifluoromethyl)phenyl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H10Cl3F7O
assistant