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