Using COC(=O)c1ccc([N+](=O)[O-])cc1Oc1nc(OC)cc(OC)n1 to produce COc1cc(OC)nc(Oc2cc([N+](=O)[O-])ccc2C(=O)O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.