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