pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.59	IUPAC digitized pKa	0	-1	O=[N+]([O-])c1cc(O)cc(O)c1	O=[N+]([O-])c1cc([O-])cc(O)c1	mol9656	O=[N+]([O-])c1cc(O)cc(O)c1
9.24	IUPAC digitized pKa	-1	-2	O=[N+]([O-])c1cc([O-])cc(O)c1	O=[N+]([O-])c1cc([O-])cc([O-])c1	mol9656	O=[N+]([O-])c1cc(O)cc(O)c1