['CC(C)c1cc(N)n[nH]1', 'CC(C)(C)C(=O)NCC=O', 'CC(C)(C)C=O', 'CC(C)c1cc(NC(=O)CN)n[nH]1', 'CC(C)(C)C(N)=O', 'CC(=O)Nc1cc(C(C)C)[nH]n1', 'CC(C)c1ccn[nH]1', 'CC(C)(C)C(=O)NCC(N)=O', 'CCC', 'CC(C)(C)C(=O)NCC(=O)Nc1cc[nH]n1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cn[nH]c1.