CC(C)N1C(=O)[N-]C(=O)[C@H]1CC(=O)O    mol34468    -1_1
CC(C)N1C(=O)NC(=O)[C@H]1CC(=O)[O-]    mol34468    -1_2
CC(C)N1C(=O)[N-]C(=O)[C@H]1CC(=O)[O-]    mol34468    -2_1