pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.6	IUPAC digitized pKa	0	-1	COc1cccc(O)c1C#N	COc1cccc([O-])c1C#N	mol10521	COc1cccc(O)c1C#N