You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 19-phenyl-17-[3-(3-triphenylen-2-ylphenyl)phenyl]-21-thia-16,18-diazapentacyclo[12.7.0.02,7.08,13.015,20]henicosa-1(14),2,4,6,8,10,12,15(20),16,18-decaene by IUPAC nomenclature, provide its molecular formula.
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C54H32N2S
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