Using COC(=O)C(Cc1ccc(OCCN2c3ccccc3Oc3ccccc32)cc1)C(=O)OC to produce O=C(O)C(Cc1ccc(OCCN2c3ccccc3Oc3ccccc32)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.