pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.8	IUPAC digitized pKa	0	-1	CCOC(=O)c1cc(=O)c(O)co1	CCOC(=O)c1cc(=O)c([O-])co1	mol10428	CCOC(=O)c1cc(=O)c(O)co1