Using CCOCCO, COC(=O)CCc1ccc(OCc2cccc(-c3c(C)cc(O)cc3C)c2)cc1 to produce CCOCCOc1cc(C)c(-c2cccc(COc3ccc(CCC(=O)OC)cc3)c2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.