['CC(C)C/C(N)=N/O', 'Cc1cc(-c2ccccc2)on1', 'CO/N=C(\\N)CC(C)C', 'c1ccc(-c2ccno2)cc1', 'c1ccccc1', 'CC(C)C/C(N)=N/OCc1ccon1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-c2ccno2)cc1.