CCNc1nc(N)nc(NCC)n1    mol4261    0_1
CCNc1nc(N)[nH+]c(NCC)n1    mol4261    1_1
CCNc1nc(N)nc(NCC)[nH+]1    mol4261    1_2
CCNc1nc([NH3+])nc(NCC)n1    mol4261    1_3
CCNc1nc(N)nc([NH2+]CC)n1    mol4261    1_4