You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2E)-N-[2-[4-(2,3-dimethylphenyl)piperazin-1-yl]ethyl]-4-methyl-2-[(3-methylphenyl)methylidene]-3-oxo-1,4-benzothiazine-6-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C32H36N4O2S
assistant