pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.1	IUPAC digitized pKa	1	0	C/C=[NH+]/NC(N)=O	C/C=N/NC(N)=O	mol8790	C/C=N/NC(N)=O