pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.51	IUPAC digitized pKa	0	-1	O=C(O)c1cc(=O)cc(-c2ccccc2)o1	O=C([O-])c1cc(=O)cc(-c2ccccc2)o1	mol11652	O=C(O)c1cc(=O)cc(-c2ccccc2)o1