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What is the molecular formula of the compound with this IUPAC name 5-[[2-(2-methoxyethylamino)-9-methyl-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-(2-methylpropyl)-2-sulfanylidene-1,3-thiazolidin-4-one ?
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C20H24N4O3S2
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