['CNC', 'CC(C)c1noc(N2C[C@@H]([SH](=O)=O)[C@H](C(F)(F)F)C2)n1', 'CC(C)c1ncon1', 'CN(C)S(=O)(=O)[C@@H]1CNC[C@H]1C(F)(F)F', 'CCC', 'CN(C)S(=O)(=O)[C@@H]1CN(c2ncno2)C[C@H]1C(F)(F)F', 'FC(F)F', 'CC(C)c1noc(N2CC[C@H](S(=O)(=O)N(C)C)C2)n1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1noc(N2CCCC2)n1.