Using CC[C@@H](c1nc(C(N)=O)co1)[C@@H](C)NC(=O)OC(C)(C)C to produce CC[C@@H](c1nc(C(N)=O)co1)[C@@H](C)N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.