Using COC=CC=C(C(=O)OC)C(=O)OC, CC(C)(C)OC(=O)[C@@H](N)Cc1cn(C(=O)OC(C)(C)C)c2ccccc12 to produce COC(=O)c1cccn([C@@H](Cc2cn(C(=O)OC(C)(C)C)c3ccccc23)C(=O)OC(C)(C)C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.