['CO', 'CC(C=O)CN(C)C(=O)CCNC(=O)c1ccsc1', 'CNCC(C)C(=O)OC', 'O=CCCNC(=O)c1ccsc1', 'O=Cc1ccsc1', 'COC(=O)C(C)CN(C)C(=O)CCN', 'COC(=O)C(C)C', 'CNC(=O)CCNC(=O)c1ccsc1', 'NC(=O)c1ccsc1', 'CCC(=O)N(C)CC(C)C(=O)OC', 'c1ccsc1', 'COC(=O)C(C)CN(C)C(=O)CCNC=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.