['C#CCN', 'COc1ccc(S(=O)(=O)N[C@@H](C)C=O)cc1', 'CO', 'C#CCNC(=O)[C@H](C)NS(=O)(=O)c1ccccc1', 'C#CC', 'COc1ccc(S(=O)(=O)N[C@@H](C)C(N)=O)cc1', 'C#CCNC(=O)CC', 'COc1ccc(S(N)(=O)=O)cc1', 'C#CCNC(=O)[C@H](C)N', 'COc1ccc([SH](=O)=O)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.