pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.25	IUPAC digitized pKa	1	0	Cn1c[nH+]c2cccc([N+](=O)[O-])c21	Cn1cnc2cccc([N+](=O)[O-])c21	mol4531	Cn1cnc2cccc([N+](=O)[O-])c21