You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 7-[(1S,2S,3R)-2-[2-[2-fluoro-3-(trifluoromethyl)phenyl]ethenyl]-3-hydroxy-5-oxocyclopentyl]heptanoic acid .
user
C21H24F4O4
assistant