pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.66	Datawarrior	0	-1	C=C(C)C(=O)O	C=C(C)C(=O)[O-]	mol2559	C=C(C)C(=O)O
4.65	Organic Oxygen Acids and Nitrogen Bases	0	-1	C=C(C)C(=O)O	C=C(C)C(=O)[O-]	mol2559	C=C(C)C(=O)O
4.6599998	OCHEM	0	-1	C=C(C)C(=O)O	C=C(C)C(=O)[O-]	mol2559	C=C(C)C(=O)O
4.65999984741211	QSARToolbox	0	-1	C=C(C)C(=O)O	C=C(C)C(=O)[O-]	mol2559	C=C(C)C(=O)O
4.46	AttenGpKa training set	0	-1	C=C(C)C(=O)O	C=C(C)C(=O)[O-]	mol2559	C=C(C)C(=O)O