['CC(C)(C)NCC=O', 'COc1ccc(OCCN)cc1', 'COc1ccc(O)cc1', 'CCNC(=O)CNC(C)(C)C', 'CO', 'CC(C)(C)NCC(=O)NCCOc1ccccc1', 'COc1ccccc1', 'CC(C)(C)NCC(=O)NCCO', 'CC(C)(C)NCC(N)=O', 'CCOc1ccc(OC)cc1', 'CC(C)(C)N', 'COc1ccc(OCCNC(C)=O)cc1', 'CC(C)C', 'COc1ccc(OCCNC(=O)CN)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.