Using CCOC(=O)CC(=O)c1cccc(OCc2c(C)cccc2C)c1, CCOC(=O)CCBr to produce CCOC(=O)CCC(C(=O)OCC)C(=O)c1cccc(OCc2c(C)cccc2C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.