['CCCCSC(C)C=O', 'CCOC1CCCNC1', 'CC', 'CCCCSC(C)C(=O)N1CCCC(O)C1', 'CCO', 'CCCCSC(C)C(=O)N1CCCCC1', 'CCCC', 'CCOC1CCCN(C(=O)C(C)S)C1', 'CCCCS', 'CCOC1CCCN(C(=O)CC)C1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is C1CCNCC1.