Using CCOC(=O)CBr, COc1cc(C=O)cc([N+](=O)[O-])c1O to produce CCOC(=O)COc1c(OC)cc(C=O)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.