Using C=C[Sn](CCCC)(CCCC)CCCC, O=C(c1ccccc1)c1cc(Br)ccc1NC(=O)C(F)(F)F to produce C=Cc1ccc(NC(=O)C(F)(F)F)c(C(=O)c2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.