pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.67	IUPAC digitized pKa	1	0	Nc1cccc[n+]1O	Nc1cccc[n+]1[O-]	mol3821	Nc1cccc[n+]1[O-]