O=C([O-])CN1CCC[NH+](CC(=O)[O-])CCOCC1    mol38316    -1_1
O=C([O-])CN1CCCN(CC(=O)O)CCOCC1    mol38316    -1_2
O=C([O-])CN1CCCN(CC(=O)[O-])CCOCC1    mol38316    -2_1