COC1=C(C2=C(O)C(=O)C(C)=CC2=O)C(=O)C=C(C)C1=O    mol36643    0_1
[CH2-]C1=CC(=O)C(C2=C(O)C(=O)C(C)=CC2=O)=C(OC)C1=O    mol36643    -1_1
[CH2-]C1=CC(=O)C(C2=C(OC)C(=O)C(C)=CC2=O)=C(O)C1=O    mol36643    -1_2
COC1=C(C2=C([O-])C(=O)C(C)=CC2=O)C(=O)C=C(C)C1=O    mol36643    -1_3