O=C(O)c1c(O)cccc1O    mol2242    0_1
O=C([O-])c1c([O-])cccc1[O-]    mol2242    -3_1
O=C(O)c1c([O-])cccc1O    mol2242    -1_1
O=C([O-])c1c(O)cccc1O    mol2242    -1_2
O=C(O)c1c([O-])cccc1[O-]    mol2242    -2_1
O=C([O-])c1c([O-])cccc1O    mol2242    -2_2