['N[C@@H]1CCCOC1', 'O=CCc1ccon1', 'C1CCOCC1', 'NC(=O)Cc1ccon1', 'c1cnoc1', 'CC(=O)N[C@@H]1CCCOC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C(Cc1ccon1)N[C@@H]1CCCOC1.