O=C([O-])c1c[nH+]ncc1C(=O)O    mol9627    0_1
O=C([O-])c1c[nH+][nH+]cc1C(=O)[O-]    mol9627    0_2
O=C(O)c1cnncc1C(=O)O    mol9627    0_3
O=C([O-])c1cn[nH+]cc1C(=O)O    mol9627    0_4
O=C([O-])c1cn[nH+]cc1C(=O)[O-]    mol9627    -1_1
O=C([O-])c1cnncc1C(=O)O    mol9627    -1_2