You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 2,5-bis[2-(trifluoromethyl)carbazol-9-yl]-4-[2-(trifluoromethyl)phenyl]benzonitrile is given. What is its corresponding molecular formula?
user
C40H20F9N3
assistant