1-(5,7-Diphenyl-4,7-dihydro-(1,2,4)triazolo(1,5-a)pyrimidin-2-yl)-2,5-pyrrolidinedione 171668-01-2 2,5-Pyrrolidinedione, 1-(5,7-diphenyl-4,7-dihydro-(1,2,4)triazolo(1,5-a)pyrimidin-2-yl)- N-(5,7-Diphenyl-4,7-dihydro-1,2,4-triazolo(1,5-a)pyrimidin-2-yl)succinimide