['CCCCN(CC=O)[C@H](C)CC', 'NC(=O)CSc1ccccc1N', 'CCCC', 'CC[C@@H](C)NCC(=O)Nc1ccccc1SCC(N)=O', 'CCCCN[C@H](C)CC', 'CC(=O)Nc1ccccc1SCC(N)=O', 'CCCC', 'CCCCNCC(=O)Nc1ccccc1SCC(N)=O', 'CC(N)=O', 'CCCCN(CC(=O)Nc1ccccc1S)[C@H](C)CC', 'NC(=O)CSc1ccccc1', 'CCCCN(CC(N)=O)[C@H](C)CC', 'NC(=O)CS', 'CCCCN(CC(=O)Nc1ccccc1)[C@H](C)CC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.