Dipyridamole Ditartaric Acid Diester Diammonium Salt

ammonium (2S,2’S,3S,3’S)-4,4′-((((4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,6-diyl)bis((2-hydroxyethyl)azanediyl))bis(ethane-2,1-diyl))bis(oxy))bis(2,3-dihydroxy-4-oxobutanoate)