Using N[C@H]1CC[C@@H](C(=O)O)CC1, Clc1nc(Cl)nc(Cl)n1 to produce O=C(O)[C@H]1CC[C@@H](Nc2nc(Cl)nc(Cl)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.