Using COC(=O)c1ccccc1NC(=O)c1cc2cc(OC)c(OC)cc2s1 to produce COc1cc2cc(C(=O)Nc3ccccc3C(=O)O)sc2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.