Using CCOC(=O)[C@@]1(F)[C@@H]2C[C@@H](N=[N+]=[N-])[C@@](N=[N+]=[N-])(C(=O)OCC)[C@@H]21 to produce CCOC(=O)[C@]1(N)[C@H](N)C[C@@H]2[C@H]1[C@@]2(F)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.