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-[1-[4-(benzenesulfonyl)piperazin-1-yl]-1-oxopropan-2-yl]pyrazole-4-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C17H20N4O5S
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