Nc1nccnc1CO    mol25702    0_1
Nc1[nH+]ccnc1CO    mol25702    1_1
Nc1ncc[nH+]c1CO    mol25702    1_2
Nc1nccnc1C[OH2+]    mol25702    1_3
[NH3+]c1nccnc1CO    mol25702    1_4