CC1=CC=C(N\N=C2/C(=O)C(=CC3=C2C=CC=C3)C(O)=O)C(=C1)S(O)(=O)=O.CC1=CC=C(\N=N\C2=C(O)C(=CC3=C2C=CC=C3)C(O)=O)C(=C1)S(O)(=O)=O