pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.6	Datawarrior	0	-1	""	""	mol12860	[N-]=[N+]=Nc1ncnc2nc[nH]c12
7.5999999	OCHEM	0	-1	""	""	mol12860	[N-]=[N+]=Nc1ncnc2nc[nH]c12