CNc1nc(C)nc(NC)c1[N+](=O)[O-]    mol7503    0_1
CNc1nc(C)[nH+]c(NC)c1[N+](=O)[O-]    mol7503    1_1
CNc1nc(C)nc([NH2+]C)c1[N+](=O)[O-]    mol7503    1_2