['CCC(C=O)CC', 'Cc1nccn1-c1ccc(CN)cc1F', 'CCC(CC)C(N)=O', 'Cc1ccc(-n2ccnc2C)c(F)c1', 'CCC(CC)C(=O)NC', 'Cc1nccn1-c1ccccc1F', 'Cc1ncc[nH]1', 'CCC(CC)C(=O)NCc1cccc(F)c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-n2ccnc2)cc1.