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What is the molecular formula of the compound with this IUPAC name 1'-[(5E)-5-[1-(6-chloropyridin-3-yl)propylidene]-4-oxo-1,3-thiazol-2-yl]spiro[2-benzofuran-3,4'-piperidine]-1-one ?
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C23H20ClN3O3S
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