pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.09	IUPAC digitized pKa	0	-1	COc1ccc(C(=O)OCC(=O)O)cc1	COc1ccc(C(=O)OCC(=O)[O-])cc1	mol11207	COc1ccc(C(=O)OCC(=O)O)cc1