pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
0.26	IUPAC digitized pKa	1	0	[NH3+]c1ccc([N+](=O)[O-])c(Cl)c1	Nc1ccc([N+](=O)[O-])c(Cl)c1	mol2206	Nc1ccc([N+](=O)[O-])c(Cl)c1