You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[5-[2-(dimethylamino)ethyl]-8-methoxy-2-(4-methylphenyl)-4-oxo-2,3-dihydro-1,5-benzothiazepin-3-yl] acetate;oxalic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H30N2O8S
assistant