Using O=Cc1ccc(B(O)O)cc1, COc1c(Br)cccc1[N+](=O)[O-] to produce COc1c(-c2ccc(C=O)cc2)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.