Using CCOC(=O)CBr, O=C1CCc2ccc(O)c([N+](=O)[O-])c21 to produce CCOC(=O)COc1ccc2c(c1[N+](=O)[O-])C(=O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.