You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule [1-(1,3-benzothiazol-2-yl)azetidin-3-yl] 1-(5-chlorothiophen-2-yl)sulfonylpyrrolidine-2-carboxylate into molecular formula.
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C19H18ClN3O4S3
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