Using C=C(CBr)C(=O)OCC, CC(=O)COc1ccc2ccc(=O)oc2c1 to produce C=C1CC(C)(COc2ccc3ccc(=O)oc3c2)OC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.