pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.43	IUPAC digitized pKa	0	-1	CCCC[C@H](O[NH3+])C(=O)[O-],CCCC[C@H](ON)C(=O)O	CCCC[C@H](ON)C(=O)[O-]	mol8496	CCCCC(ON)C(=O)O