['CC(C)(C)O', 'O=CN[C@H](C(=O)O)c1cccc(Br)c1', 'CC(C)(C)OC=O', 'N[C@H](C(=O)O)c1cccc(Br)c1', 'CC(C)C', 'O=C(O)N[C@H](C(=O)O)c1cccc(Br)c1', 'CC(C)(C)OC(N)=O', 'O=C(O)Cc1cccc(Br)c1', 'Brc1ccccc1', 'CC(C)(C)OC(=O)NCC(=O)O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.