COBALTATE(1-),[6-(AMINO-.KAPPA.N)-5-[[2-(HYDROXY-.KAPPA.O)-4-NITROPHENYL]AZO-.KAPPA.N1]-N-(2-HYDROXYPROPYL)-2-NAPHTHALENESULFONAMIDATO(2-)][1-[[5-CHLORO-2-(HYDROXY-.KAPPA.O)PHENYL]AZO-.KAPPA.N1]-2-NAPHTHALENOLATO(2-)-.KAPPA.O]-,SODIUM