You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-[2-[(1,1-dioxo-1,2-benzothiazol-3-yl)oxy]ethyl]-1,1-dioxo-1,2-benzothiazol-3-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H12N2O6S2
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