Using O=[N+]([O-])c1cc(OCc2ccccc2)c(C2CCCC2)cc1Br, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(C(=O)OCC)c1cc(C2CCCC2)c(OCc2ccccc2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.