Using COC(=O)c1cc(I)c(C(F)(F)F)cc1N, CCCC[Sn](CCCC)(CCCC)c1cnnn1C to produce COC(=O)c1cc(-c2cnnn2C)c(C(F)(F)F)cc1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.