Using Oc1ccc(Cl)cc1Cc1cc(Cl)ccc1O, ClCCOCCOCCOCCCl to produce Clc1ccc2c(c1)Cc1cc(Cl)ccc1OCCOCCOCCOCCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.