Using CSc1nccc(-c2[nH]c3cccnc3c2-c2ccc(F)cc2)n1 to produce Fc1ccc(-c2c(-c3ccncn3)[nH]c3cccnc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.