['CC(C)(C)NCC=O', 'COc1ccc(N)cc1F', 'CO', 'CC(C)(C)NCC(=O)Nc1cccc(F)c1', 'CC(C)(C)N', 'COc1ccc(NC(C)=O)cc1F', 'CC(C)C', 'COc1ccc(NC(=O)CN)cc1F', 'CC(C)(C)NCC(N)=O', 'COc1ccccc1F']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.