NC(C(=O)O)C(=O)O    mol9035    0_1
[NH3+]C(C(=O)[O-])C(=O)O    mol9035    0_2
[NH3+]C(C(=O)[O-])C(=O)[O-]    mol9035    -1_1
NC(C(=O)[O-])C(=O)O    mol9035    -1_2
NC(C(=O)[O-])C(=O)[O-]    mol9035    -2_1