Using CC(C)(C)OC(=O)N1C(=O)C(C)(C)C[C@@H]1C(=O)OCc1ccccc1 to produce CC1(C)C[C@H](C(=O)OCc2ccccc2)N(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.