['NCCCCCC(=O)O', 'CC(C)(C)c1cc(Br)ccc1OCC=O', 'CC(C)(C)c1cc(Br)ccc1O', 'CC(=O)NCCCCCC(=O)O', 'CC(C)(C)c1cccc(Br)c1', 'O=C(O)CCCCCNC(=O)CO', 'CCCCCC(=O)O', 'CC(C)(C)c1cc(Br)ccc1OCC(N)=O', 'CC(C)C', 'O=C(O)CCCCCNC(=O)COc1ccc(Br)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.