pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.35	IUPAC digitized pKa	0	-1	NC(=O)c1cc2[nH]nnc2nc1N	NC(=O)c1cc2[n-]nnc2nc1N	mol9670	NC(=O)c1cc2[nH]nnc2nc1N