You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[4-(dimethylsulfamoyl)phenoxy]ethyl]-2-(4-methyl-N-(4-methylsulfanylphenyl)sulfonylanilino)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H31N3O6S3
assistant