CC(C)[C@@H](N)C(=O)O    mol12485    0_1
CC(C)[C@@H]([NH3+])C(=O)[O-]    mol12485    0_2
CC(C)[C@@H]([NH3+])C(=O)O    mol12485    1_1
CC(C)[C@@H](N)C(=O)[O-]    mol12485    -1_1