Using CCCCCCc1ccc(-c2ccc([Sn](CCCC)(CCCC)CCCC)s2)cc1, Brc1ccc(Br)s1 to produce CCCCCCc1ccc(-c2ccc([Sn](CCCC)(CCCC)CCCC)s2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.