['N[C@H]1CCCC[C@H]1O', 'CCc1ccccc1', 'NC1CCCCC1', 'OCCc1ccccc1', 'c1ccccc1', 'CCO[C@@H]1CCCC[C@@H]1N']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(CCOC2CCCCC2)cc1.