Using NNc1ccccc1, CCOC(=O)CC(=O)c1c(F)c(F)c(F)c(F)c1F to produce Oc1cc(-c2c(F)c(F)c(F)c(F)c2F)nn1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.