pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-9.27	IUPAC digitized pKa	1	0	O=C(O)C[NH2+]c1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]	O=C(O)CNc1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]	mol6007	O=C(O)CNc1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]