You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[2-[2-(3,5-dimethylphenoxy)ethylsulfanyl]ethyl]-1,1-dioxo-1,2-benzothiazol-3-one into molecular formula.
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C19H21NO4S2
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