Using COc1cc(OC)cc(C(=CC#N)c2cccc(OCc3ccccc3)c2)c1 to produce COc1cc(OC)cc(C(=CC#N)c2cccc(O)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.