['CS(N)(=O)=O', 'COCCOc1ccccc1C=O', 'CO', 'CCOc1ccccc1C(=O)NS(C)(=O)=O', 'CCOC', 'CS(=O)(=O)NC(=O)c1ccccc1O', 'COCCO', 'CS(=O)(=O)NC(=O)c1ccccc1', 'C[SH](=O)=O', 'COCCOc1ccccc1C(N)=O', 'CS(=O)(=O)NC=O', 'COCCOc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.