Using N=C(NN)c1cc(F)ccc1F, CC(C)(C)OC(=O)N[C@@H](C(=O)O)C(C)(C)C to produce CC(C)(C)OC(=O)N[C@@H](C(=O)NNC(=N)c1cc(F)ccc1F)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.