Using COc1cc(C2C(C#N)=C(N)Oc3c2ccc2ccccc32)cc(Br)c1OCc1ccccc1 to produce COc1cc(C2C(C#N)=C(N)Oc3c2ccc2ccccc32)cc(Br)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.