Using COC(=O)Cc1cc(O)cc(O)c1-c1ccc(CCC(C)=O)o1 to produce CC(=O)CCc1ccc(-c2c(O)cc(O)cc2CC(=O)O)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.