Using C[C@@H](CC(=O)CBr)OCc1ccccc1, CCOC(=O)CC(C)=O to produce CCOC(=O)C(CC(=O)C[C@H](C)OCc1ccccc1)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.