Using CC(C)(C)OC(=O)N1CCN(c2ccc(Br)nc2)CC1, CCCC[Sn](Cl)(CCCC)CCCC to produce CCCC[Sn](CCCC)(CCCC)c1ccc(N2CCN(C(=O)OC(C)(C)C)CC2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.