Using CSc1nccc(C(Cc2ccc(F)cc2)=Nc2cccnc2Cl)n1 to produce CSc1nccc(-c2[nH]c3cccnc3c2-c2ccc(F)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.