Using CCOC(=O)[C@@H]1CCCN(CC(O)CN2c3ccccc3CCc3ccccc32)C1 to produce O=C(O)[C@@H]1CCCN(CC(O)CN2c3ccccc3CCc3ccccc32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.