['CC(C=O)NS(C)(=O)=O', 'Nc1cc(C(F)(F)F)c[nH]c1=O', 'CS(N)(=O)=O', 'CCC(=O)Nc1cc(C(F)(F)F)c[nH]c1=O', 'C[SH](=O)=O', 'CC(N)C(=O)Nc1cc(C(F)(F)F)c[nH]c1=O', 'CC(NS(C)(=O)=O)C(N)=O', 'O=c1ccc(C(F)(F)F)c[nH]1', 'FC(F)F', 'CC(NS(C)(=O)=O)C(=O)Nc1ccc[nH]c1=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=c1cccc[nH]1.