pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-0.43	IUPAC digitized pKa	1	0	CCCC(N)=[OH+]	CCCC(N)=O	mol3172	CCCC(N)=O
-0.430000007152557	QSARToolbox	1	0	CCCC(N)=[OH+]	CCCC(N)=O	mol3172	CCCC(N)=O