['CN[C@@H]1COC[C@H]1O', 'CC(C)c1ncon1', 'O[C@H]1CCOC1', 'CNc1nc(C(C)C)no1', 'CCC', 'CN(c1ncno1)[C@@H]1COC[C@H]1O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1noc(N[C@H]2CCOC2)n1.