CCNc1nc(Cl)nc(NCC)n1 mol25807 0_1 CCNc1nc(Cl)nc([NH2+]CC)n1 mol25807 1_1 CCNc1nc(Cl)[nH+]c(NCC)n1 mol25807 1_2 CCNc1nc(Cl)nc(NCC)[nH+]1 mol25807 1_3