['CO', 'CC(C)CN(CC(=O)Nc1ccsc1C=O)CC(C)C', 'COC(=O)c1sccc1N', 'CC(C)CN(CC=O)CC(C)C', 'CC(C)CNCC(C)C', 'COC(=O)c1sccc1NC(C)=O', 'CC(C)C', 'COC(=O)c1sccc1NC(=O)CNCC(C)C', 'COC(=O)c1cccs1', 'CC(C)CN(CC(N)=O)CC(C)C', 'COC=O', 'CC(C)CN(CC(=O)Nc1ccsc1)CC(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.