160524-27-6 3-((2-Cyclohexyl-2-oxoethylidene)amino)-2,5-dioxo-4-imidazolidineheptanoic acid 4-Imidazolidineheptanoic acid, 3-((2-cyclohexyl-2-oxoethylidene)amino)-2,5-dioxo- 94125-79-8