Using C=C[Sn](CCCC)(CCCC)CCCC, CC1(C)OC(=O)c2c(cccc2OS(=O)(=O)C(F)(F)F)O1 to produce C=Cc1cccc2c1C(=O)OC(C)(C)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.