['CN', 'Cn1nncc1S(=O)(=O)N1CCCCC1C=O', 'Cn1nncc1[SH](=O)=O', 'CNC(=O)C1CCCCN1', 'CNC=O', 'Cn1nncc1S(=O)(=O)N1CCCCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=S(=O)(c1cnn[nH]1)N1CCCCC1.