pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.2	IUPAC digitized pKa	1	0	[NH3+]c1cccc2ccc(O)cc12	Nc1cccc2ccc(O)cc12	mol3530	Nc1cccc2ccc(O)cc12
4.19999980926514	QSARToolbox	1	0	[NH3+]c1cccc2ccc(O)cc12	Nc1cccc2ccc(O)cc12	mol3530	Nc1cccc2ccc(O)cc12