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