CCNc1nc(N)nc(N)n1    mol4270    0_1
CCNc1nc(N)nc(N)[nH+]1    mol4270    1_1
CC[NH2+]c1nc(N)nc(N)n1    mol4270    1_2
CCNc1nc(N)[nH+]c(N)n1    mol4270    1_3
CCNc1nc(N)nc([NH3+])n1    mol4270    1_4