You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-dibenzothiophen-1-yl-3-phenylphenyl)-N-(4-phenanthren-9-ylphenyl)dibenzofuran-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C56H35NOS
assistant