CC(C)Oc1nc(N)nc(N)n1    mol25776    0_1
CC(C)Oc1nc(N)nc([NH3+])n1    mol25776    1_1
CC(C)Oc1nc(N)[nH+]c(N)n1    mol25776    1_2
CC(C)Oc1nc(N)nc(N)[nH+]1    mol25776    1_3