Using C#CCC(C(=O)OCC)C(=O)OCC, Clc1ccccc1/C=C/CBr to produce C#CCC(CC=Cc1ccccc1Cl)(C(=O)OCC)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.