pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.59	IUPAC digitized pKa	0	-1	O=C(O)c1cc(=O)cc(-c2ccccc2)s1	O=C([O-])c1cc(=O)cc(-c2ccccc2)s1	mol11687	O=C(O)c1cc(=O)cc(-c2ccccc2)s1