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system
Name the molecular formula for the molecule established as acetic acid;(5E)-5-[[9-methyl-4-oxo-2-(1-phenylethylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-propan-2-yl-2-sulfanylidene-1,3-thiazolidin-4-one using the IUPAC nomenclature.
user
C26H28N4O4S2
assistant