pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.58999991416931	QSARToolbox	0	-1	CCCC[NH+](CC(=O)[O-])CC(=O)O	CCCC[NH+](CC(=O)[O-])CC(=O)[O-]	mol34353	CCCCN(CC(=O)O)CC(=O)O