Using CCCC[Sn](Cl)(CCCC)CCCC, OC1(c2cccc(Br)n2)CCC1 to produce CCCC[Sn](CCCC)(CCCC)c1cccc(C2(O)CCC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.