pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.47	IUPAC digitized pKa	0	-1	CCCC(=O)c1c(O)oc(CCC)cc1=O	CCCC(=O)c1c([O-])oc(CCC)cc1=O	mol11677	CCCC(=O)c1c(O)oc(CCC)cc1=O