Using CCCC[Sn](CCCC)(CCCC)c1ccc(OC)nc1, CCN1CCN(c2nc(Br)cc3ccccc23)CC1 to produce CCN1CCN(c2nc(-c3ccc(OC)nc3)cc3ccccc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.