Using CC(C)c1nc(COCc2ccccc2)[nH]c1Sc1cc(F)cc(F)c1, CCBr to produce CCn1c(COCc2ccccc2)nc(C(C)C)c1Sc1cc(F)cc(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.