pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.2	IUPAC digitized pKa	0	-1	O=C(O)c1ccccc(O)c1=O	O=C([O-])c1ccccc(O)c1=O	mol10392	O=C(O)c1ccccc(O)c1=O
7.98	IUPAC digitized pKa	-1	-2	O=C([O-])c1ccccc(O)c1=O	O=C([O-])c1ccccc([O-])c1=O	mol10392	O=C(O)c1ccccc(O)c1=O