Using COc1ccc2cccc(OS(=O)(=O)C(F)(F)F)c2n1, C=CC[Sn](CCCC)(CCCC)CCCC to produce C=CCc1cccc2ccc(OC)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.