Cc1nn(C)c(N)nc1=O    mol9403    0_1
Cc1[nH+]n(C)c(N)nc1=O    mol9403    1_1
Cc1nn(C)c([NH3+])nc1=O    mol9403    1_2
Cc1nn(C)c(N)[nH+]c1=O    mol9403    1_3