['CCC', 'N=C(N)COc1ccc(O)cc1', 'CC(=N)N', 'CCCOc1ccc(O)cc1', 'CCCO', 'N=C(N)COc1ccccc1', 'N=C(N)CO', 'CCCOc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.