Using C=CCBr, COc1ccc(CC(=O)c2ccc(C#N)cc2C)cc1 to produce C=CCC(C(=O)c1ccc(C#N)cc1C)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.