O=C([O-])CCN(CCC(=O)[O-])c1cc[nH+]cc1 mol36110 -1_1 O=C([O-])CCN(CCC(=O)O)c1ccncc1 mol36110 -1_2 O=C([O-])CC[NH+](CCC(=O)[O-])c1ccncc1 mol36110 -1_3 O=C([O-])CCN(CCC(=O)[O-])c1ccncc1 mol36110 -2_1