Using [Cl-], COCCOc1cc(-c2cn(Cc3ccc(OC)c(OC)c3)cc(C#N)c2=O)ccc1OC to produce COCCOc1cc(-c2cncc(C#N)c2Cl)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.