O/N=C/c1nnc(-c2ccccc2)o1    mol20493    0_1
[O-]/N=C/c1n[nH+]c(-c2ccccc2)o1    mol20493    0_2
[O-]/N=C/c1[nH+]nc(-c2ccccc2)o1    mol20493    0_3
[O-]/N=C/c1nnc(-c2ccccc2)o1    mol20493    -1_1