['NCCCCCC(=O)O', 'COc1ccc(OCC=O)cc1', 'COc1ccc(O)cc1', 'CC(=O)NCCCCCC(=O)O', 'CO', 'O=C(O)CCCCCNC(=O)COc1ccccc1', 'COc1ccccc1', 'O=C(O)CCCCCNC(=O)CO', 'CCCCCC(=O)O', 'COc1ccc(OCC(N)=O)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.