CCN(CC)c1nc(N)nc(N)n1    mol4268    0_1
CC[NH+](CC)c1nc(N)nc(N)n1    mol4268    1_1
CCN(CC)c1nc(N)nc([NH3+])n1    mol4268    1_2
CCN(CC)c1nc(N)[nH+]c(N)n1    mol4268    1_3
CCN(CC)c1nc(N)nc(N)[nH+]1    mol4268    1_4