Using CCOC(=O)C(C(O)Cc1ccccc1)N(Cc1ccccc1)Cc1ccccc1 to produce O=C(O)C(C(O)Cc1ccccc1)N(Cc1ccccc1)Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.