pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.54	IUPAC digitized pKa	1	0	O[n+]1cnc2cc(Cl)ccc2c1	[O-][n+]1cnc2cc(Cl)ccc2c1	mol4653	[O-][n+]1cnc2cc(Cl)ccc2c1