pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.89	IUPAC digitized pKa	2	1	[NH3+][C@H]1CNC=[NH+]C1	N[C@H]1CNC=[NH+]C1,[NH3+][C@@H]1CN=CNC1	mol7120	NC1CN=CNC1