['CCOCC(C)N', 'COc1ccc(C=O)c(O)c1', 'CC', 'COc1ccc(C(=O)NC(C)CO)c(O)c1', 'CCO', 'COc1ccc(C(=O)NC(C)C)c(O)c1', 'CO', 'CCOCC(C)NC(=O)c1ccccc1O', 'CCCOCC', 'COc1ccc(C(N)=O)c(O)c1', 'CCOCC(C)NC=O', 'COc1cccc(O)c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.