Using Nc1nc(-c2nn(Cc3ccccc3F)c3ncccc23)nc(N)c1N, CCOC(=O)Cl to produce CCOC(=O)Nc1c(N)nc(-c2nn(Cc3ccccc3F)c3ncccc23)nc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.