Using COC(=O)c1ccc(Oc2ccccc2NC(=O)c2cccc([N+](=O)[O-])c2)cc1C(=O)OC to produce O=C(Nc1ccccc1Oc1ccc(C(=O)O)c(C(=O)O)c1)c1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.