You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[5-[[4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyloxy)phenyl]methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]butanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C22H19NO8S3
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