['CC(C)CCCN', 'O=CNCC(=O)Nc1ccc(F)c(F)c1F', 'CC(C)CCCNC=O', 'NCC(=O)Nc1ccc(F)c(F)c1F', 'Nc1ccc(F)c(F)c1F', 'CC(C)CCCNC(=O)NCC=O', 'CCCC(C)C', 'NC(=O)NCC(=O)Nc1ccc(F)c(F)c1F', 'CC(C)CCCNC(N)=O', 'CC(=O)Nc1ccc(F)c(F)c1F', 'Fc1cccc(F)c1F', 'CC(C)CCCNC(=O)NCC(N)=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.