['CC', 'OC1CCCN(C(=S)Nc2ccccc2)C1', 'CCO', 'S=C(Nc1ccccc1)N1CCCCC1', 'c1ccccc1', 'CCOC1CCCN(C(N)=S)C1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is S=C(Nc1ccccc1)N1CCCCC1.