Using CC(=O)S[C@@H](Cc1ccccc1)C(=O)O, CC(C)C[C@H](N)C(=O)OC(C)(C)C to produce CC(=O)SC(Cc1ccccc1)C(=O)N[C@@H](CC(C)C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.