You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-[1,3-benzothiazol-2-ylmethyl(methyl)amino]-1-oxopropan-2-yl] 2-(1,1-dioxothiolan-3-yl)acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22N2O5S2
assistant