pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.3	IUPAC digitized pKa	-1	-2	O=C(CC(=O)c1cccc(S(=O)(=O)[O-])c1)c1ccccc1	O=C([CH-]C(=O)c1cccc(S(=O)(=O)[O-])c1)c1ccccc1	mol12030	O=C(CC(=O)c1cccc(S(=O)(=O)O)c1)c1ccccc1