O=C([O-])C[N+]([O-])(CC(=O)[O-])CC(=O)[O-]    mol9779    -3_1
O=C([O-])C[N+](O)(CC(=O)[O-])CC(=O)O    mol9779    -1_1
O=C([O-])C[N+]([O-])(CC(=O)O)CC(=O)O    mol9779    -1_2
O=C([O-])C[N+](O)(CC(=O)[O-])CC(=O)[O-]    mol9779    -2_1
O=C([O-])C[N+]([O-])(CC(=O)[O-])CC(=O)O    mol9779    -2_2