Using C=C[Sn](CCCC)(CCCC)CCCC, CCCc1cc(C(=O)OC)ccc1OS(=O)(=O)C(F)(F)F to produce C=Cc1ccc(C(=O)OC)cc1CCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.