pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.8	IUPAC digitized pKa	0	-1	COc1ccc(/C=C/C(=O)O)c(OC)c1	COc1ccc(/C=C/C(=O)[O-])c(OC)c1	mol11515	COc1ccc(/C=C/C(=O)O)c(OC)c1