You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-methoxycarbonylphenyl) 2,2-dioxo-3,4-dihydro-[1,2,4]thiadiazino[3,4-b][1,3]benzothiazole-8-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H14N2O6S2
assistant