CC(C)(C)c1ccnc(N)n1    mol1609    0_1
CC(C)(C)c1ccnc(N)[nH+]1    mol1609    1_1
CC(C)(C)c1ccnc([NH3+])n1    mol1609    1_2
CC(C)(C)c1cc[nH+]c(N)n1    mol1609    1_3