['CO', 'COc1ccccc1CNCCCCCO', 'COc1cccc(CNCCCCCO)c1', 'NCCCCCO', 'COc1ccc(OC)c(C)c1', 'CCCCCO', 'COc1ccc(OC)c(CN)c1', 'CNCCCCCO', 'COc1ccc(OC)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.