You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-[(2R)-4-(3,4-dihydro-1H-isoquinolin-2-yl)-4-oxobutan-2-yl]sulfonyl-3,5-dihydro-2H-1,5-benzothiazepin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H24N2O4S2
assistant