['CNC(=O)[C@H](C)O', 'O=Cc1ccc(N2CCCC2=O)cc1', 'CN', 'C[C@@H](C=O)OC(=O)c1ccc(N2CCCC2=O)cc1', 'CCC(=O)NC', 'O=C(O)c1ccc(N2CCCC2=O)cc1', 'CNC(=O)[C@H](C)OC=O', 'O=C1CCCN1c1ccccc1', 'O=C1CCCN1', 'CNC(=O)[C@H](C)OC(=O)c1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C1CCCN1c1ccccc1.