pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.98	Datawarrior	0	-1	N#CCCC(=O)O	N#CCCC(=O)[O-]	mol15978	N#CCCC(=O)O
3.99	OCHEM	0	-1	N#CCCC(=O)O	N#CCCC(=O)[O-]	mol15978	N#CCCC(=O)O
3.97000002861023	QSARToolbox	0	-1	N#CCCC(=O)O	N#CCCC(=O)[O-]	mol15978	N#CCCC(=O)O
3.99000000953674	QSARToolbox	0	-1	N#CCCC(=O)O	N#CCCC(=O)[O-]	mol15978	N#CCCC(=O)O