You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(6S)-2-(4-methoxyphenyl)imino-3-methyl-4-oxo-N-(4-propoxyphenyl)-1,3-thiazinane-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25N3O4S
assistant