Using COc1ccc(CCc2ccc(Nc3ccccc3C(=O)O)cc2)cc1OC to produce O=C(O)c1ccccc1Nc1ccc(CCc2ccc(O)c(O)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.