['CCO', 'CC(C)N(CC=O)CC(=O)Nc1cccc(Br)c1', 'Nc1cccc(Br)c1', 'CCOC(=O)CN(CC=O)C(C)C', 'CC', 'CC(C)N(CC(=O)O)CC(=O)Nc1cccc(Br)c1', 'CCOC(C)=O', 'CC(C)NCC(=O)Nc1cccc(Br)c1', 'CCOC(=O)CNC(C)C', 'CC(=O)Nc1cccc(Br)c1', 'CCC', 'CCOC(=O)CNCC(=O)Nc1cccc(Br)c1', 'Brc1ccccc1', 'CCOC(=O)CN(CC(N)=O)C(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.