Using CCCC[Sn](CCCC)(CCCC)C1=CCCCC1, COc1ccc(Br)cc1[N+](=O)[O-] to produce COc1ccc(C2=CCCCC2)cc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.