CC(C)N1C(=O)[N-]C(=O)C[C@H]1C(=O)O    mol34467    -1_1
CC(C)N1C(=O)NC(=O)C[C@H]1C(=O)[O-]    mol34467    -1_2
CC(C)N1C(=O)[N-]C(=O)C[C@H]1C(=O)[O-]    mol34467    -2_1