Using CC(=O)OC(C)=O, COc1ccc(CC(=O)c2ccc(O)cc2O)cc1 to produce COc1ccc(-c2c(C)oc3cc(O)ccc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.