pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.88	IUPAC digitized pKa	0	-1	CCOC(=O)CNc1ccc(C(=O)O)cc1	CCOC(=O)CNc1ccc(C(=O)[O-])cc1	mol11598	CCOC(=O)CNc1ccc(C(=O)O)cc1