['CC(C)(C)N', 'CN(CC=O)S(=O)(=O)c1cccc(C(F)(F)F)c1', 'CC(=O)NC(C)(C)C', 'CNS(=O)(=O)c1cccc(C(F)(F)F)c1', 'CC(C)C', 'CN(CC(N)=O)S(=O)(=O)c1cccc(C(F)(F)F)c1', 'CNCC(=O)NC(C)(C)C', 'O=[SH](=O)c1cccc(C(F)(F)F)c1', 'FC(F)F', 'CN(CC(=O)NC(C)(C)C)S(=O)(=O)c1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.