['CC=O', 'CC(CO)CNCc1ccc(N)cc1', 'CC(CN)CO', 'CC(=O)Nc1ccc(C)cc1', 'CC(C)CO', 'CC(=O)Nc1ccc(CN)cc1', 'CC(N)=O', 'CC(CO)CNCc1ccccc1', 'CNCC(C)CO', 'CC(=O)Nc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.