['CC(C)C', 'OCCN1CCN(c2ccc(O)cc2)CC1', 'CC(C)(C)O', 'CCN1CCN(c2ccc(O)cc2)CC1', 'CCOC(C)(C)C', 'Oc1ccc(N2CCNCC2)cc1', 'Oc1ccccc1', 'CC(C)(C)OCCN1CCNCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(N2CCNCC2)cc1.