Using COC(=O)CN(C(=O)OC)c1c(N)nc(-c2nn(Cc3ccccc3F)c3ncccc23)nc1N to produce COC(=O)N1CC(=O)Nc2nc(-c3nn(Cc4ccccc4F)c4ncccc34)nc(N)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.