You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-[(2S)-2-ethylpiperidin-1-yl]propyl]-4-[(E)-[4-[(2-methylphenyl)methyl]-3-oxo-1,4-benzothiazin-2-ylidene]methyl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C34H39N3O2S
assistant