['CC(C=O)NS(C)(=O)=O', 'CC(N)C12CC3CC(CC(C3)C1)C2', 'CS(N)(=O)=O', 'CCC(=O)NC(C)C12CC3CC(CC(C3)C1)C2', 'CC(NS(C)(=O)=O)C(N)=O', 'CCC12CC3CC(CC(C3)C1)C2', 'C[SH](=O)=O', 'CC(N)C(=O)NC(C)C12CC3CC(CC(C3)C1)C2', 'C1C2CC3CC1CC(C2)C3', 'CCNC(=O)C(C)NS(C)(=O)=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is C1C2CC3CC1CC(C2)C3.