Cc1nc(/C=N/[O-])o[nH+]1    mol20098    0_1
Cc1noc(/C=N/O)n1    mol20098    0_2
Cc1noc(/C=N/[O-])[nH+]1    mol20098    0_3
Cc1noc(/C=N/[O-])n1    mol20098    -1_1