['CCO', 'COCCCCN(CC=O)Cc1ccccc1', 'CC', 'COCCCCN(CC(=O)O)Cc1ccccc1', 'CO', 'CCCCN(CC(=O)OCC)Cc1ccccc1', 'CCOC(C)=O', 'COCCCCNCc1ccccc1', 'CCCCOC', 'CCOC(=O)CNCc1ccccc1', 'Cc1ccccc1', 'CCOC(=O)CNCCCCOC', 'c1ccccc1', 'CCOC(=O)CN(C)CCCCOC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.