pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-3.5	IUPAC digitized pKa	0	-1	O=[N+]([O-])c1cc([N+](=O)[O-])c(C([N+](=O)[O-])[N+](=O)[O-])c([N+](=O)[O-])c1	O=[N+]([O-])c1cc([N+](=O)[O-])c([C-]([N+](=O)[O-])[N+](=O)[O-])c([N+](=O)[O-])c1	mol10030	O=[N+]([O-])c1cc([N+](=O)[O-])c(C([N+](=O)[O-])[N+](=O)[O-])c([N+](=O)[O-])c1