You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[9-[2,3-dimethyl-4-[4-(2-methylphenyl)phenyl]phenyl]nonyl]-2,3-dimethyl-4-(4-phenylphenyl)benzene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H54
assistant