['O=CCC1C=CCCC1', 'CN(C)S(=O)(=O)[C@@H]1CNC[C@H]1C(F)(F)F', 'CNC', 'O=C(CC1C=CCCC1)N1C[C@@H]([SH](=O)=O)[C@H](C(F)(F)F)C1', 'C1=CCCCC1', 'CC(=O)N1C[C@@H](C(F)(F)F)[C@H](S(=O)(=O)N(C)C)C1', 'FC(F)F', 'CN(C)S(=O)(=O)[C@H]1CCN(C(=O)CC2C=CCCC2)C1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C(CC1C=CCCC1)N1CCCC1.