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 2-(1-benzylphosphepan-1-ium-1-yl)-N-(4-methyl-2-oxaldehydoylthiophen-3-yl)acetamide is given. What is its corresponding molecular formula?
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C22H27NO3PS+
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