['CNC(=O)[C@H](C)O', 'O=CCCc1c[nH]c2ccccc12', 'CN', 'C[C@@H](C=O)OC(=O)CCc1c[nH]c2ccccc12', 'CCC(=O)NC', 'O=C(O)CCc1c[nH]c2ccccc12', 'c1ccc2[nH]ccc2c1', 'CCC(=O)O[C@@H](C)C(=O)NC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2[nH]ccc2c1.