Using CCOc1ccccc1C(=O)C(Cc1coc(-c2ccc(OC)c(OCc3ccccc3)c2)n1)C(=O)OC to produce CCOc1ccccc1C(=O)CCc1coc(-c2ccc(OC)c(O)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.