You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 1-[2-oxo-2-[(3S)-3-phenyl-2,3-dihydro-1,4-benzothiazin-4-yl]ethyl]piperidin-1-ium-4-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H29N2O3S+
assistant