Using C=Cc1nn(-c2cncc(F)c2)cc1N(C)C(=O)OC(C)(C)C to produce CCc1nn(-c2cncc(F)c2)cc1N(C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.