You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[5-[3-[4-(1,2-benzothiazol-3-yl)piperidin-1-yl]propylsulfanyl]thiophen-2-yl]acetamide is given. What is its corresponding molecular formula?
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C21H25N3OS3
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