pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.22	IUPAC digitized pKa	1	0	[NH3+]Cc1ccccc1CCC(=O)O	[NH3+]Cc1ccccc1CCC(=O)[O-]	mol11391	NCc1ccccc1CCC(=O)O