['CCC', 'OCCCCCNCc1cccc(O)c1', 'CC(C)O', 'OCCCCCNCc1ccccc1', 'NCCCCCO', 'Cc1cccc(OC(C)C)c1', 'CCCCCO', 'CC(C)Oc1cccc(CN)c1', 'CNCCCCCO', 'CC(C)Oc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.