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system
Name the molecular formula for the molecule established as N-[6-acetyl-3-(1,3-benzothiazol-2-yl)-5,7-dihydro-4H-thieno[2,3-c]pyridin-2-yl]-4-(diethylsulfamoyl)benzamide using the IUPAC nomenclature.
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C27H28N4O4S3
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