Cc1cnc(N)nc1N    mol7304    0_1
Cc1cnc([NH3+])nc1N    mol7304    1_1
Cc1cnc(N)[nH+]c1N    mol7304    1_2
Cc1cnc(N)nc1[NH3+]    mol7304    1_3
Cc1c[nH+]c(N)nc1N    mol7304    1_4