CN(C)c1ccnc(N)n1    mol4081    0_1
CN(C)c1ccnc(N)[nH+]1    mol4081    1_1
C[NH+](C)c1ccnc(N)n1    mol4081    1_2
CN(C)c1ccnc([NH3+])n1    mol4081    1_3
CN(C)c1cc[nH+]c(N)n1    mol4081    1_4