Using CC[C@H](C)[C@H](NC(=O)[C@H](CC(=O)OCc1ccccc1)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)OC(C)(C)C)C(=O)N[C@@H](CCSC)C(=O)NNC(=O)OCC(Cl)(Cl)Cl to produce CC[C@H](C)[C@H](NC(=O)[C@H](CC(=O)OCc1ccccc1)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)OC(C)(C)C)C(=O)N[C@@H](CCSC)C(=O)NN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.