O=C([O-])c1ccccc1N=Nc1c(O)ccc2ccccc12    mol12166    -1_1
O=C([O-])c1ccccc1[NH+]=Nc1c([O-])ccc2ccccc12    mol12166    -1_2
O=C([O-])c1ccccc1N=[NH+]c1c([O-])ccc2ccccc12    mol12166    -1_3
O=C(O)c1ccccc1N=Nc1c([O-])ccc2ccccc12    mol12166    -1_4
O=C([O-])c1ccccc1N=Nc1c([O-])ccc2ccccc12    mol12166    -2_1