pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.3	IUPAC digitized pKa	1	0	C[NH+]=c1ncn(C)c2nccnc12,CN=c1[nH+]cn(C)c2nccnc12,CN=c1ncn(C)c2[nH+]ccnc12,CN=c1ncn(C)c2ncc[nH+]c12	CN=c1ncn(C)c2nccnc12	mol4779	CN=c1ncn(C)c2nccnc12