Using N[C@@H](CCC(=O)O)C(=O)O, O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO to produce O=C(O)CC[C@H](NCC(O)C(O)C(O)C(O)CO)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.