['CCC', 'CC[C@@H](CO)NCc1cccc(O)c1', 'CC(C)O', 'CC[C@@H](CO)NCc1ccccc1', 'CCCCO', 'CC(C)Oc1cccc(CN)c1', 'CC[C@H](N)CO', 'Cc1cccc(OC(C)C)c1', 'CC[C@@H](CO)NC', 'CC(C)Oc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.