Using O=P([O-])(O)O, O=CCc1ccc(C2CCN(C(=O)OCc3ccccc3)CC2)cc1 to produce O=C(O)Cc1ccc(C2CCN(C(=O)OCc3ccccc3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.