['Cc1cc(C)on1', 'Nc1ccc(F)cc1[N+](=O)[O-]', 'Cc1cc(CN)no1', 'O=[N+]([O-])c1cccc(F)c1', 'Cc1ccno1', 'CNc1ccc(F)cc1[N+](=O)[O-]']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(NCc2ccon2)cc1.