Using COC(=O)c1cccc(OC(C)c2ccc3ccccc3c2)c1C(=O)OC to produce CC(Oc1cccc(C(=O)O)c1C(=O)O)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.