pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-0.63	AttenGpKa training set	0	-1	O=[N+]([O-])c1n[nH]c([N+](=O)[O-])n1	O=[N+]([O-])c1n[n-]c([N+](=O)[O-])n1	mol25389	O=[N+]([O-])c1n[nH]c([N+](=O)[O-])n1