Using CCCC[Sn](Cl)(CCCC)CCCC, CN1CCN(Cc2cc(Br)co2)CC1 to produce CCCC[Sn](CCCC)(CCCC)c1coc(CN2CCN(C)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.