['CC(C)CN', 'COc1ccc(CC=O)c(OC)c1', 'CO', 'COc1ccccc1CC(=O)NCC(C)C', 'COc1ccc(CC(=O)NCC(C)C)cc1', 'CC(C)C', 'COc1ccc(CC(N)=O)c(OC)c1', 'CC(=O)NCC(C)C', 'COc1cccc(OC)c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.