O=C(O)c1cccc(C(=O)O)n1    mol6418    0_1
O=C([O-])c1cccc(C(=O)O)[nH+]1    mol6418    0_2
O=C([O-])c1cccc(C(=O)O)n1    mol6418    -1_1
O=C([O-])c1cccc(C(=O)[O-])[nH+]1    mol6418    -1_2
O=C([O-])c1cccc(C(=O)[O-])n1    mol6418    -2_1