['COc1ccccc1O', 'CCN(C)CCCNS(C)(=O)=O', 'CO', 'CN(CCCNS(C)(=O)=O)CCOc1ccccc1', 'COc1ccccc1', 'CN(CCO)CCCNS(C)(=O)=O', 'CNCCCNS(C)(=O)=O', 'CCOc1ccccc1OC', 'CCCNS(C)(=O)=O', 'CNCCOc1ccccc1OC', 'CS(N)(=O)=O', 'CCCN(C)CCOc1ccccc1OC', 'C[SH](=O)=O', 'COc1ccccc1OCCN(C)CCCN']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.