You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(4,7-dimethyl-1,3-benzothiazol-2-yl)-4-[(2R)-2-methylpiperidin-1-yl]sulfonylbenzamide into molecular formula.
user
C22H25N3O3S2
assistant