Using C=C(CBr)C(=O)OCC, O=C(COc1ccc2ccc(=O)oc2c1)c1ccccc1 to produce C=C1CC(COc2ccc3ccc(=O)oc3c2)(c2ccccc2)OC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.