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What is the molecular formula of the molecule identified by (5E)-5-[[9-methyl-4-oxo-2-(propylamino)pyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-[[(2R)-oxolan-2-yl]methyl]-2-sulfanylidene-1,3-thiazolidin-4-one ?
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C21H24N4O3S2
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