Using COC(=O)COc1ccc2ccc(O)c(C(C)=O)c2c1, BrCCCOCCCBr to produce COC(=O)COc1ccc2ccc(OCCCOCCCBr)c(C(C)=O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.