pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-1.84	AttenGpKa training set	1	0	O=[N+]([O-])c1cc[n+](O)cc1Br	O=[N+]([O-])c1cc[n+]([O-])cc1Br	mol25199	O=[N+]([O-])c1cc[n+](O)cc1Br