O=C1Oc2ccccc2C(=O)[C@@H]1Cc1c([O-])c2ccccc2oc1=O    mol15301    -1_1
O=c1oc2ccccc2c([O-])c1C[c-]1c(=O)oc2ccccc2c1=O    mol15301    -2_1