['Cc1noc(C)c1C', 'Nc1ccc([N+](=O)[O-])cn1', 'Cc1noc(C)c1CN', 'O=[N+]([O-])c1cccnc1', 'Cc1cc(C)on1', 'CNc1ccc([N+](=O)[O-])cn1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(NCc2cnoc2)nc1.