['CCC', 'CS(=O)(=O)CCNC1CCc2ccccc2C1', 'CCS(C)(=O)=O', 'CCCNC1CCc2ccccc2C1', 'CCCNCCS(C)(=O)=O', 'c1ccc2c(c1)CCCC2']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2c(c1)CCCC2.