['Cc1ccc(Cl)cc1N', 'C[C@@H]1C[C@@H](C)CN([C@@H](C)C=O)C1', 'C[C@H]1CNC[C@H](C)C1', 'CCC(=O)Nc1cc(Cl)ccc1C', 'Cc1ccc(Cl)cc1', 'C[C@@H]1C[C@@H](C)CN([C@@H](C)C(N)=O)C1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C(CN1CCCCC1)Nc1ccccc1.