['CC[C@H](C)N', 'Cc1ccccc1N1CCN([C@H](C)C=O)CC1', 'CCCC', 'Cc1ccccc1N1CCN([C@H](C)C(N)=O)CC1', 'CCC(=O)N[C@@H](C)CC', 'Cc1ccccc1N1CCNCC1', 'Cc1ccccc1', 'CC[C@H](C)NC(=O)[C@@H](C)N1CCNCC1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(N2CCNCC2)cc1.