Using C=CCOC(=O)c1cccc(COc2ccc3c(=O)c(-c4ccc([N+](=O)[O-])cc4)coc3c2)c1 to produce C=CCOC(=O)c1cccc(COc2ccc3c(=O)c(-c4ccc(N)cc4)coc3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.