O=c1c([O-])c(-c2ccccc2)oc2cc(O)ccc12    mol33797    -1_1
O=c1c(O)c(-c2ccccc2)oc2cc([O-])ccc12    mol33797    -1_2
O=c1c([O-])c(-c2ccccc2)oc2cc([O-])ccc12    mol33797    -2_1