pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.0300002	OCHEM	0	-1	O=CC(O)=CO	O=CC(O)=C[O-]	mol32502	O=CC(O)=CO
4.92999982833862	QSARToolbox	0	-1	O=CC(O)=CO	O=CC(O)=C[O-]	mol32502	O=CC(O)=CO