['CC(C)C', 'Cn1nncc1S(=O)(=O)NC1CCCc2cccnc21', 'Cn1nncc1[SH](=O)=O', 'CC(C)CNC1CCCc2cccnc21']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=S(=O)(NC1CCCc2cccnc21)c1cnn[nH]1.