pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.75	IUPAC digitized pKa	-1	-2	O=C([O-])c1ccc(NS(=O)(=O)c2ccccc2)cc1	O=C([O-])c1ccc([N-]S(=O)(=O)c2ccccc2)cc1	mol11916	O=C(O)c1ccc(NS(=O)(=O)c2ccccc2)cc1