Using Nc1c(I)cc(Br)c2c1C(=O)NC2=O, CCCC[Sn](CCCC)(CCCC)c1ccco1 to produce Nc1c(-c2ccco2)cc(Br)c2c1C(=O)NC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.