pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.51	IUPAC digitized pKa	0	-1	O=C(O)COc1ccccc1C(=O)O	O=C(O)COc1ccccc1C(=O)[O-],O=C([O-])COc1ccccc1C(=O)O	mol10854	O=C(O)COc1ccccc1C(=O)O
4.36	IUPAC digitized pKa	-1	-2	O=C(O)COc1ccccc1C(=O)[O-],O=C([O-])COc1ccccc1C(=O)O	O=C([O-])COc1ccccc1C(=O)[O-]	mol10854	O=C(O)COc1ccccc1C(=O)O