pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.22	IUPAC digitized pKa	0	-1	O=C(O)c1ccc([N+](=O)[O-])[nH]1	O=C([O-])c1ccc([N+](=O)[O-])[nH]1	mol9349	O=C(O)c1ccc([N+](=O)[O-])[nH]1