['CC(C)(CC=O)CC(=O)O', 'CCOc1ccc(C#N)cc1N', 'CC', 'CC(C)(CC(=O)O)CC(=O)Nc1cc(C#N)ccc1O', 'CCO', 'CC(C)(CC(=O)O)CC(=O)Nc1cccc(C#N)c1', 'CC(C)(CC(N)=O)CC(=O)O', 'CCOc1ccc(C#N)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.