Using CCc1cccc(CC)c1-c1cc2c(Br)cn(-c3ccc(C(C)C)cc3)c2cn1, C=C[Sn](CCCC)(CCCC)CCCC to produce C=Cc1cn(-c2ccc(C(C)C)cc2)c2cnc(-c3c(CC)cccc3CC)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.