pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.76999998092651	QSARToolbox	0	-1	O=C(O)C=CCC(=O)O	O=C([O-])C=CCC(=O)O,O=C(O)C=CCC(=O)[O-]	mol32977	O=C(O)C=CCC(=O)O
4.1	OCHEM	-1	-2	O=C([O-])C=CCC(=O)O,O=C(O)C=CCC(=O)[O-]	O=C([O-])C=CCC(=O)[O-]	mol32977	O=C(O)C=CCC(=O)O
5.80000019073486	QSARToolbox	-1	-2	O=C([O-])C=CCC(=O)O,O=C(O)C=CCC(=O)[O-]	O=C([O-])C=CCC(=O)[O-]	mol32977	O=C(O)C=CCC(=O)O