['CC(N)C(=O)NC(C)(C)C', 'O=CCC12CC3CC(CC(Br)(C3)C1)C2', 'CC(C)(C)N', 'CC(C=O)NC(=O)CC12CC3CC(CC(Br)(C3)C1)C2', 'CCC(=O)NC(C)(C)C', 'NC(=O)CC12CC3CC(CC(Br)(C3)C1)C2', 'CC(C)C', 'CC(NC(=O)CC12CC3CC(CC(Br)(C3)C1)C2)C(N)=O', 'BrC12CC3CC(CC(C3)C1)C2', 'CC(=O)NC(C)C(=O)NC(C)(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is C1C2CC3CC1CC(C2)C3.