pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
11.5	IUPAC digitized pKa	0	-1	COO	CO[O-]	mol8900	COO
11.25	AttenGpKa training set	0	-1	COO	CO[O-]	mol8900	COO