Nc1cc(C(=O)O)cc(C(=O)O)c1    mol22761    0_1
[NH3+]c1cc(C(=O)[O-])cc(C(=O)O)c1    mol22761    0_2
[NH3+]c1cc(C(=O)[O-])cc(C(=O)[O-])c1    mol22761    -1_1
Nc1cc(C(=O)[O-])cc(C(=O)O)c1    mol22761    -1_2