[CH2-]C(=O)C1=C(O)C(C)(C)C(O)=C(C(C)=O)C1=O    mol34688    -1_1
CC(=O)C1=C([O-])C(C)(C)C(O)=C(C(C)=O)C1=O    mol34688    -1_2
[CH2-]C(=O)C1=C(O)C(C)(C)C([O-])=C(C(C)=O)C1=O    mol34688    -2_1
[CH2-]C(=O)C1=C([O-])C(C)(C)C(O)=C(C(C)=O)C1=O    mol34688    -2_2
CC(=O)C1=C([O-])C(C)(C)C([O-])=C(C(C)=O)C1=O    mol34688    -2_3
[CH2-]C(=O)C1=C(O)C(C)(C)C(O)=C(C([CH2-])=O)C1=O    mol34688    -2_4