Using COC(=O)/C(=C/c1nccs1)NC(=O)c1ccc(C(=O)NCc2cccc(O)c2)cc1Br to produce O=C(O)/C(=C/c1nccs1)NC(=O)c1ccc(C(=O)NCc2cccc(O)c2)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.