['CC(C)C', 'NCc1ncc(-c2ccccc2)o1', 'CC(C)(C)N', 'Cc1ncc(-c2ccccc2)o1', 'CNC(C)(C)C', 'c1ccc(-c2cnco2)cc1', 'c1ccccc1', 'CC(C)(C)NCc1ncco1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-c2cnco2)cc1.