pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.84	IUPAC digitized pKa	0	-1	O=C1CNC2=CNC(=O)NC2=N1	O=C1CNC2=CNC(=O)[N-]C2=N1,O=C1CNC2=C[N-]C(=O)NC2=N1	mol9676	O=C1CNC2=CNC(=O)NC2=N1