['CC(N)c1cccs1', 'COCCOCCC=O', 'CO', 'CCOCCC(=O)NC(C)c1cccs1', 'CCOC', 'CC(NC(=O)CCO)c1cccs1', 'COCCO', 'CCC(=O)NC(C)c1cccs1', 'CCc1cccs1', 'COCCOCCC(N)=O', 'c1ccsc1', 'CCNC(=O)CCOCCOC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.