Using NC(N)=NCCC[C@H](N)C(=O)O, CCCCC(CC)COCC1CO1 to produce CCCCC(CC)COCC(O)CN[C@@H](CCCNC(=N)N)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.