Using Nc1ccc(Br)c2c1C(=O)NC2, CCCC[Sn](CCCC)(CCCC)c1ccco1 to produce Nc1ccc(-c2ccco2)c2c1C(=O)NC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.