83804-16-4

sodium [N-[7-hydroxy-8-[(2-hydroxy-5-nitrophenyl)azo]-1-naphthyl]acetamidato(2-)][N-[7-hydroxy-8-[(2-hydroxy-5-nitrophenyl)azo]-1-naphthyl]methane-1-sulphonamidato(2-)]chromate(1-)