Using OB(O)c1cc(Cl)ccc1Cl, COC(=O)c1cc(I)c(Cl)cc1OC to produce COC(=O)c1cc(-c2cc(Cl)ccc2Cl)c(Cl)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.