Using CCOC(=O)CC(C)=O, BrCCC=CCCc1ccc2c(c1)OCO2 to produce CCOC(=O)C(CCC=CCCc1ccc2c(c1)OCO2)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.