Using O=c1cc(-c2ccc(C(F)(F)F)cc2)ccn1-c1ccc2[nH]ncc2c1, ClCCCBr to produce O=c1cc(-c2ccc(C(F)(F)F)cc2)ccn1-c1ccc2c(cnn2CCCCl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.