pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.8	Datawarrior	-1	-2	O=[N+]([O-])[N-]c1nc[nH]n1	O=[N+]([O-])[N-]c1nc[n-]n1	mol13673	O=[N+]([O-])[N-]c1nc[nH]n1