Using C=CCBr, CCc1ccc(Cc2cc(Br)c(OCCO)cc2Cl)cc1 to produce C=CCOCCOc1cc(Cl)c(Cc2ccc(CC)cc2)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.