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