['CC(C)C', 'CC(C)(C)c1[nH]ncc1CNCC(O)CO', 'CC(C)CO', 'CC(O)CNCc1cn[nH]c1C(C)(C)C', 'CC(C)COCC(C)O', 'CC(C)(C)c1[nH]ncc1CN', 'Cc1cn[nH]c1C(C)(C)C', 'CC(C)COCC(O)CN', 'CC(C)C', 'CC(C)COCC(O)CNCc1cn[nH]c1', 'CC(C)(C)c1ccn[nH]1', 'CNCC(O)COCC(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cn[nH]c1.