Using C[C@@H](COC1CCN(c2nc3ccc(OCC4CC4)cc3o2)CC1)NC(=O)OC(C)(C)C to produce C[C@H](N)COC1CCN(c2nc3ccc(OCC4CC4)cc3o2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.