Using CCOP(=O)(CC(=O)OC(C)(C)C)OCC, COC(=O)c1ccc(C(C)Br)cc1 to produce CCOP(=O)(OCC)C(C(=O)OC(C)(C)C)C(C)c1ccc(C(=O)OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.