['CC(C)CN', 'Cc1cccc(-c2nc(CC=O)cs2)c1', 'CC(C)C', 'Cc1cccc(-c2nc(CC(N)=O)cs2)c1', 'CC(=O)NCC(C)C', 'Cc1cccc(-c2nccs2)c1', 'Cc1ccccc1', 'CC(C)CNC(=O)Cc1cscn1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-c2nccs2)cc1.