72066-86-5 Acetamide, N-(2-((2-bromo-4,6-dinitrophenyl)azo)-5-(ethylamino)-4-(2-methoxyethoxy)phenyl)- N-(2-((2-Bromo-4,6-dinitrophenyl)azo)-5-(ethylamino)-4-(2-methoxyethoxy)phenyl)acetamide