['CNC', 'O=CN1CCN(S(=O)(=O)c2ccoc2)CC1', 'CN(C)C=O', 'O=S(=O)(c1ccoc1)N1CCNCC1', 'O=[SH](=O)c1ccoc1', 'CN(C)C(=O)N1CCNCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=S(=O)(c1ccoc1)N1CCNCC1.