Using Cc1c([N+](=O)[O-])cc(F)c2c1ncn2C(=O)OC(C)(C)C to produce Cc1c(N)cc(F)c2c1ncn2C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.