['CCOCC(C)N', 'Cn1cc(Br)cc1C=O', 'CC', 'CC(CO)NC(=O)c1cc(Br)cn1C', 'CCO', 'CC(C)NC(=O)c1cc(Br)cn1C', 'CCCOCC', 'Cn1cc(Br)cc1C(N)=O', 'Cn1ccc(Br)c1', 'CCOCC(C)NC=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cc[nH]c1.