Using C=C(CBr)C(=O)N(Cc1ccc(OC)cc1OC)C(CC(C)C)C(=O)NCC(=O)OCC to produce C=C(CBr)C(=O)NC(CC(C)C)C(=O)NCC(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.