You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[(2,4-dichlorophenyl)methyl-(4-methylphenyl)sulfonylamino]-N-(3-methylsulfanylphenyl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C23H22Cl2N2O3S2
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