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-[4-[[2-(4-methoxyphenyl)-1-methylpiperidin-3-yl]methylamino]-4-oxobutyl]thiophene-3-carboxamide is given. What is its corresponding molecular formula?
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C23H31N3O3S
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