Using Cc1cc(O)cc(=O)o1, O=C(O)Cc1cccc([N+](=O)[O-])c1 to produce Cc1cc(O)c(C(=O)Cc2cccc([N+](=O)[O-])c2)c(=O)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.