pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.85	IUPAC digitized pKa	0	-1	CCOC(=O)c1cc(=O)c(O)c(C(=O)OCC)o1	CCOC(=O)c1cc(=O)c([O-])c(C(=O)OCC)o1	mol11518	CCOC(=O)c1cc(=O)c(O)c(C(=O)OCC)o1