['CC(C)(C)NCC=O', 'CS(=O)(=O)Nc1cccc(N)c1', 'CC(C)C', 'CS(=O)(=O)Nc1cccc(NC(=O)CN)c1', 'CC(C)(C)N', 'CC(=O)Nc1cccc(NS(C)(=O)=O)c1', 'C[SH](=O)=O', 'CC(C)(C)NCC(=O)Nc1cccc(N)c1', 'CC(C)(C)NCC(N)=O', 'CS(=O)(=O)Nc1ccccc1', 'CS(N)(=O)=O', 'CC(C)(C)NCC(=O)Nc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.