[Na+].[Na+].NC1=CC(N)=C(C=C1)\N=N\C1=CC=C(C=C1)C1=CC=C(C=C1)\N=N\C1=C(C=C2C=C(C(\N=N\C3=CC=CC=C3)=C([O-])C2=C1N)S(O)(=O)=O)S([O-])(=O)=O