You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named [4-[(5-chloro-2,3-dihydro-1,2,3-benzothiadiazol-2-ium-6-yl)amino]-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-7-yl]-thiomorpholin-4-ylmethanone is given. What is its corresponding molecular formula?
user
C21H22ClN6OS3+
assistant