['CN', 'CC(CO)CNCc1ccccc1OCC=O', 'CNC(C)=O', 'CC(CO)CNCc1ccccc1O', 'CNC(=O)CO', 'CC(CO)CNCc1ccccc1', 'CC(CN)CO', 'CNC(=O)COc1ccccc1C', 'CC(C)CO', 'CNC(=O)COc1ccccc1CN', 'CNCC(C)CO', 'CNC(=O)COc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.