['CC1=CC(C)CNC1', 'CC(C)(C=O)NS(C)(=O)=O', 'CS(N)(=O)=O', 'CC1=CC(C)CN(C(=O)C(C)C)C1', 'C[SH](=O)=O', 'CC1=CC(C)CN(C(=O)C(C)(C)N)C1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is C1=CCNCC1.