CCCCCCCCNc1ncnc2[nH]ncc12 mol4947 0_1 CCCCCCCCNc1nc[nH+]c2[nH]ncc12 mol4947 1_1 CCCCCCCCNc1[nH+]cnc2[nH]ncc12 mol4947 1_2 CCCCCCCC[NH2+]c1ncnc2[nH]ncc12 mol4947 1_3 CCCCCCCCNc1ncnc2[nH][nH+]cc12 mol4947 1_4