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-[(1,3-dimethyl-5-piperazin-1-ylpyrazol-4-yl)methyl]-3-methylthiophene-2-sulfonamide is given. What is its corresponding molecular formula?
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C15H23N5O2S2
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