Using ClCCOCCCl, COCOc1ccc(C2COc3cc(OCOC)ccc3C2(O)c2ccc(O)cc2)cc1 to produce COCOc1ccc(C2COc3cc(OCOC)ccc3C2(O)c2ccc(OCCOCCCl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.