Using CCOC(=O)CC(=O)CC, CCc1cc(Br)cc2c(CCO)c[nH]c12 to produce CCOC(=O)CC1(CC)OCCc2c1[nH]c1c(CC)cc(Br)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.