Using CCOC(=O)C(NC(=O)OC(C)(C)C)C(=O)OCC, Clc1cc(Br)ccc1CCI to produce CCOC(=O)C(CCc1ccc(Br)cc1Cl)(NC(=O)OC(C)(C)C)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.