pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.15	IUPAC digitized pKa	-1	-2	O=Nc1c(S(=O)(=O)[O-])cc(O)c2cn[nH]c12	O=Nc1c(S(=O)(=O)[O-])cc(O)c2cn[n-]c12,O=Nc1c(S(=O)(=O)[O-])cc([O-])c2cn[nH]c12	mol10304	O=Nc1c(S(=O)(=O)O)cc(O)c2cn[nH]c12