[NH3+]C(CC(=O)[O-])CC(=O)O    mol33895    0_1
NC(CC(=O)O)CC(=O)O    mol33895    0_2
[NH3+]C(CC(=O)O)CC(=O)O    mol33895    1_1
NC(CC(=O)O)CC(O)=[OH+]    mol33895    1_2