pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.4	IUPAC digitized pKa	0	-1	Cn1cnc(=O)c2[nH]cnc21	Cn1cnc(=O)c2[n-]cnc21	mol9664	Cn1cnc(=O)c2[nH]cnc21