['CCCCC', 'COc1cc(/C=C/C(=O)Cl)ccc1O', 'CCCCCO', 'COc1cccc(/C=C/C(=O)Cl)c1', 'CO', 'CCCCCOc1ccc(/C=C/C(=O)Cl)cc1', 'CC(=O)Cl', 'CCCCCOc1ccc(C)cc1OC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.