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