O=C(O)c1cc(O)cc2ccccc12    mol11488    0_1
O=C(O)c1cc([O-])cc2ccccc12    mol11488    -1_1
O=C([O-])c1cc(O)cc2ccccc12    mol11488    -1_2
O=C([O-])c1cc([O-])cc2ccccc12    mol11488    -2_1