O=C(O)c1ccccc1NCCO    mol8456    0_1
O=C([O-])c1ccccc1[NH2+]CCO    mol8456    0_2
O=C(O)c1ccccc1[NH2+]CCO    mol8456    1_1
O=C([O-])c1ccccc1NCCO    mol8456    -1_1