You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[4-(5-chloro-1,3-benzothiazol-2-yl)piperidin-1-yl]-2-(2-ethoxyphenoxy)ethanone by IUPAC nomenclature, provide its molecular formula.
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C22H23ClN2O3S
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