['Cc1ccc(C)s1', 'CC(C)NCCCO', 'CCCO', 'Cc1ccc(CNC(C)C)s1', 'CCC', 'Cc1ccc(CNCCCO)s1', 'Cc1cccs1', 'CC(C)N(C)CCCO']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.