Using COC(=O)c1cccc(Nc2ccc(OC)cc2Oc2ccccc2)c1C(=O)OC to produce COc1ccc(Nc2cccc(C(=O)O)c2C(=O)O)c(Oc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.