pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.5	IUPAC digitized pKa	0	-1	O=C(Nc1ccc([N+](=O)[O-])cc1)Oc1ccccc1	O=C([N-]c1ccc([N+](=O)[O-])cc1)Oc1ccccc1	mol11849	O=C(Nc1ccc([N+](=O)[O-])cc1)Oc1ccccc1