You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(1-benzylpiperidin-3-yl)methyl]-2-(6-chloro-3-oxo-4H-1,4-benzothiazin-2-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C23H26ClN3O2S
assistant