You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5Z)-5-[[2-(3-ethoxypropylamino)-4-oxopyrido[1,2-a]pyrimidin-3-yl]methylidene]-3-pentyl-2-sulfanylidene-1,3-thiazolidin-4-one into molecular formula.
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C22H28N4O3S2
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