['CC(C)CCCN', 'O=CNCc1ccc2c(c1)OCCO2', 'CC(C)CCCNC=O', 'NCc1ccc2c(c1)OCCO2', 'CCCC(C)C', 'NC(=O)NCc1ccc2c(c1)OCCO2', 'CC(C)CCCNC(N)=O', 'Cc1ccc2c(c1)OCCO2', 'c1ccc2c(c1)OCCO2', 'CNC(=O)NCCCC(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2c(c1)OCCO2.