pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
0.63	IUPAC digitized pKa	1	0	O=[N+]([O-])c1cnc2ccc[nH+]c2c1,O=[N+]([O-])c1c[nH+]c2cccnc2c1	O=[N+]([O-])c1cnc2cccnc2c1	mol7822	O=[N+]([O-])c1cnc2cccnc2c1