Using CCOC(=O)CBr, COCn1cc([N+](=O)[O-])c(=O)[nH]c1=O to produce CCOC(=O)Cn1c(=O)c([N+](=O)[O-])cn(COC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.