pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.81	IUPAC digitized pKa	0	-1	CC(=O)c1ccc(OCC(=O)O)cc1	CC(=O)c1ccc(OCC(=O)[O-])cc1	mol11203	CC(=O)c1ccc(OCC(=O)O)cc1