['Cc1cc(N)no1', 'O=CC[C@H]1CCOC1', 'Cc1ccno1', 'NC(=O)C[C@H]1CCOC1', 'C1CCOC1', 'CC(=O)Nc1cc(C)on1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C(C[C@H]1CCOC1)Nc1ccon1.