Using CCCC[Sn](CCCC)(CCCC)c1ccncc1, O=S(=O)(Oc1ccc(Br)c(Cc2ccccc2)n1)C(F)(F)F to produce Brc1ccc(-c2ccncc2)nc1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.