You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-(tert-butylsulfamoyl)-N-[4-(2-methylbutan-2-ylcarbamoyl)phenyl]furan-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C21H29N3O5S
assistant