Using Fc1ccc(C(c2ccc(F)cc2)N2CCNCC2)cc1, ClCCCBr to produce Fc1ccc(C(c2ccc(F)cc2)N2CCN(CCCCl)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.