pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.1	IUPAC digitized pKa	0	-1	O=COO	O=CO[O-]	mol710	O=COO
7.0999999	OCHEM	0	-1	O=COO	O=CO[O-]	mol710	O=COO
7.09999990463257	QSARToolbox	0	-1	O=COO	O=CO[O-]	mol710	O=COO