Using C#Cc1cccnc1, Cc1cc(Br)sc1-c1ccc(NC(=O)c2c(F)cccc2F)cc1 to produce Cc1cc(CCc2cccnc2)sc1-c1ccc(NC(=O)c2c(F)cccc2F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.