C=CCO/N=C(\CCC)[C@@H]1C(=O)CC(C)(C)[C@H](C(=O)OC)C1=O    mol2747    0_1
C=CCO/N=C(\CCC)[C@@H]1C(=O)CC(C)(C)[C-](C(=O)OC)C1=O    mol2747    -1_1
C=CCO/N=C(\CCC)[C-]1C(=O)CC(C)(C)[C@H](C(=O)OC)C1=O    mol2747    -1_2
C=CCO/N=C(\CCC)[C@@H]1C(=O)[CH-]C(C)(C)[C@H](C(=O)OC)C1=O    mol2747    -1_3