Using CCCC[Sn](CCCC)(CCCC)c1cnccn1, CCNC(=O)Nc1nc2cc(I)cc(I)c2s1 to produce CCNC(=O)Nc1nc2cc(-c3cnccn3)cc(-c3cnccn3)c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.