Using CC(C)(C)OC(=O)[C@@H]1CCCN1, O=C(O)c1ccccc1C(=O)c1ccccc1 to produce CC(C)(C)OC(=O)[C@@H]1CCCN1C(=O)c1ccccc1C(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.