['CC(C)CC(C)O', 'O=CCOc1ccc2c(c1)CCC(=O)N2', 'CCCC(C)C', 'O=C(O)COc1ccc2c(c1)CCC(=O)N2', 'CC(=O)OC(C)CC(C)C', 'O=C1CCc2cc(O)ccc2N1', 'CC(C)CC(C)OC(=O)CO', 'O=C1CCc2ccccc2N1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C1CCc2ccccc2N1.