You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(5R)-5,7-dimethyl-9-piperidin-4-yl-5,11-dihydropyrimido[5,4-c][1,5]benzoxazepin-4-yl]-1,4-thiazinane 1,1-dioxide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H29N5O3S
assistant