['CN(C)S(N)(=O)=O', 'CC1(c2ccc3c(c2)OCO3)CCOCC1', 'CNS(=O)(=O)N(C)C', 'c1cc2c(cc1C1CCOCC1)OCO2', 'c1ccc2c(c1)OCO2', 'CN(C)S(=O)(=O)NCC1CCOCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cc2c(cc1C1CCOCC1)OCO2.