Using CCOC(=O)c1cc(-c2cccc(C=O)c2)c(OCOC)c(-c2cccc(C=O)c2)c1 to produce COCOc1c(-c2cccc(C=O)c2)cc(C(=O)O)cc1-c1cccc(C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.