pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.1	IUPAC digitized pKa	1	0	Cn1nc2ncnc([NH2+]N)c2n1,Cn1nc2c(NN)ncnc2[nH+]1,Cn1nc2nc[nH+]c(NN)c2n1,Cn1nc2[nH+]cnc(NN)c2n1,Cn1nc2ncnc(NN)c2[nH+]1	Cn1nc2ncnc(NN)c2n1	mol8351	Cn1nc2ncnc(NN)c2n1