['CC(N)C(=O)NC(C)(C)C', 'COc1cc(/C=C/C=O)ccc1OC(F)F', 'CC(C)(C)N', 'COc1cc(/C=C/C(=O)NC(C)C=O)ccc1OC(F)F', 'CO', 'CC(NC(=O)/C=C/c1ccc(OC(F)F)cc1)C(=O)NC(C)(C)C', 'OC(F)F', 'COc1cccc(/C=C/C(=O)NC(C)C(=O)NC(C)(C)C)c1', 'CCC(=O)NC(C)(C)C', 'COc1cc(/C=C/C(N)=O)ccc1OC(F)F', 'CC(C)C', 'COc1cc(/C=C/C(=O)NC(C)C(N)=O)ccc1OC(F)F', 'COc1cc(C)ccc1OC(F)F', 'CC(=O)NC(C)C(=O)NC(C)(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.