Using N[C@H](Cc1ccc(OCc2ccccc2)cc1)C(=O)OCc1ccccc1, CC(C)(C)OC(=O)N[C@@H](CC(=O)OCc1ccccc1)C(=O)O to produce CC(C)(C)OC(=O)N[C@@H](CC(=O)OCc1ccccc1)C(=O)N[C@H](Cc1ccc(OCc2ccccc2)cc1)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.