Using CC(C)(C)N, CC(C)(C)OC(=O)N1C[C@H](OCc2ccccc2)C[C@H]1C(=O)O to produce CC(C)(C)NC(=O)[C@@H]1C[C@@H](OCc2ccccc2)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.