['CC(C)CO', 'CC(C)(C)c1[nH]ncc1CN', 'CC(CN)CO', 'Cc1cn[nH]c1C(C)(C)C', 'CC(C)C', 'CC(CO)CNCc1cn[nH]c1', 'CNCC(C)CO', 'CC(C)(C)c1ccn[nH]1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cn[nH]c1.