pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.58	OCHEM	0	-1	CC/C=C(/CC)C(=O)O	CC/C=C(/CC)C(=O)[O-]	mol1780	CC/C=C(/CC)C(=O)O