pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.3	IUPAC digitized pKa	1	0	[NH3+]c1ccccc1C1CC1	Nc1ccccc1C1CC1	mol1662	Nc1ccccc1C1CC1