You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(3-dibenzofuran-2-yl-5-dibenzothiophen-2-ylphenyl)phenyl]-N-naphthalen-1-ylnaphthalen-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C56H35NOS
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