Using CC(C)(C)OC(=O)N[C@H]1CC[C@H](Nc2cc(Nc3ccc(NC(=O)Nc4ccccc4)cc3)c3nccn3n2)CC1 to produce N[C@H]1CC[C@H](Nc2cc(Nc3ccc(NC(=O)Nc4ccccc4)cc3)c3nccn3n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.