O=C([O-])C=CC([O-])=CC(=O)[CH-]C(=O)[O-]    mol32454    -4_1
O=C([O-])C=CC(O)=CC(=O)[CH-]C(=O)[O-]    mol32454    -3_1
O=C([O-])C=CC([O-])=CC(=O)[CH-]C(=O)O    mol32454    -3_2
O=C([O-])C=CC([O-])=CC(=O)CC(=O)[O-]    mol32454    -3_3
O=C(O)C=CC([O-])=CC(=O)[CH-]C(=O)[O-]    mol32454    -3_4