Cc1noc(CN(C)C)n1    mol21024    0_1
Cc1noc(CN(C)C)[nH+]1    mol21024    1_1
Cc1noc(C[NH+](C)C)n1    mol21024    1_2
Cc1nc(CN(C)C)o[nH+]1    mol21024    1_3