['CO', 'Cc1ccc(C)c(OCCCCC(=O)NCCC=O)c1', 'COC(=O)CCN', 'Cc1ccc(C)c(OCCCCC=O)c1', 'Cc1ccc(C)c(O)c1', 'CCCCC(=O)NCCC(=O)OC', 'Cc1ccc(C)cc1', 'COC(=O)CCNC(=O)CCCCO', 'CCC(=O)OC', 'Cc1ccc(C)c(OCCCCC(N)=O)c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.