Using C[C@@H](C(=O)OC(C)(C)C)N(CC=O)C(=O)OCc1ccccc1, C[C@@H](N)C(N)=O to produce C[C@@H](NCCN(C(=O)OCc1ccccc1)[C@@H](C)C(=O)OC(C)(C)C)C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.