pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.28000020980835	QSARToolbox	0	-1	CC(C)(CCC(=O)O)C(=O)O	CC(C)(CCC(=O)[O-])C(=O)O,CC(C)(CCC(=O)O)C(=O)[O-]	mol33815	CC(C)(CCC(=O)O)C(=O)O