You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-fluoro-9-[4-(9-fluoro-4,7-diphenyl-1,10-phenanthrolin-2-yl)-2,5-dimethylphenyl]-4,7-diphenyl-1,10-phenanthroline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C56H36F2N4
assistant