NNC(=O)c1ccccc1N    mol5257    0_1
Nc1ccccc1C(=O)N[NH3+]    mol5257    1_1
NNC(=O)c1ccccc1[NH3+]    mol5257    1_2
[NH3+]NC(=O)c1ccccc1[NH3+]    mol5257    2_1
[NH-]c1ccccc1C(=O)NN    mol5257    -1_1
N[N-]C(=O)c1ccccc1N    mol5257    -1_2