['CC(C)(C)N', 'CC(C=O)NS(=O)(=O)c1cccc(C#N)c1', 'CCC(=O)NC(C)(C)C', 'N#Cc1cccc(S(N)(=O)=O)c1', 'CC(C)C', 'CC(NS(=O)(=O)c1cccc(C#N)c1)C(N)=O', 'CC(N)C(=O)NC(C)(C)C', 'N#Cc1cccc([SH](=O)=O)c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.