Using CC(=O)c1ccc(O)cc1, CC(C)(C)OC(=O)N1[C@@H](C(=O)O)COC1(C)C to produce CC(=O)c1ccc(OC(=O)[C@H]2COC(C)(C)N2C(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.