Using CCCC[Sn](CCCC)(CCCC)c1ccccn1, O=c1[nH]cnc2cc(Br)ccc12 to produce O=c1[nH]cnc2cc(-c3ccccn3)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.