pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.53000020980835	QSARToolbox	0	-1	CC1=C(CCC(=O)O)C(=O)NC1=O	CC1=C(CCC(=O)[O-])C(=O)NC1=O	mol33794	CC1=C(CCC(=O)O)C(=O)NC1=O