pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.52999997138977	QSARToolbox	0	-1	CC(C(=O)O)=C(C)C(=O)O	CC(C(=O)[O-])=C(C)C(=O)O	mol38542	CC(C(=O)O)=C(C)C(=O)O