Using CCOC(=O)c1cnn(-c2c(F)c(F)c(C(F)(F)F)c(F)c2F)c1N to produce Nc1ccnn1-c1c(F)c(F)c(C(F)(F)F)c(F)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.