You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2S)-1,4-bis(benzenesulfonyl)-N-[4-(phenylsulfamoyl)phenyl]piperazine-2-carboxamide is given. What is its corresponding molecular formula?
user
C29H28N4O7S3
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