You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-dibenzofuran-4-yl-2-[3-[3-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl]phenyl]-4-phenylthieno[2,3-c]quinoline by IUPAC nomenclature, provide its molecular formula.
user
C56H34N4OS
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