['CCCCC(C=O)CC', 'NCC1(c2ccc3c(c2)OCO3)CCOCC1', 'CCCCC(CC)C(N)=O', 'CC1(c2ccc3c(c2)OCO3)CCOCC1', 'CCCCC(CC)C(=O)NC', 'c1cc2c(cc1C1CCOCC1)OCO2', 'c1ccc2c(c1)OCO2', 'CCCCC(CC)C(=O)NCC1CCOCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cc2c(cc1C1CCOCC1)OCO2.