You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-benzyl-6,7-dimethoxy-4-methyl-2,2-dioxo-N-phenyl-2lambda6,1-benzothiazine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H24N2O5S
assistant