You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[3-(methanesulfonamido)phenyl]ethyl]-4-[(2-methyl-1,3-thiazol-4-yl)methylsulfanyl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23N3O3S3
assistant