Using C=C[Sn](CCCC)(CCCC)CCCC, Cc1cc2ccccc2c(Cl)c1OS(=O)(=O)C(F)(F)F to produce C=Cc1c(C)cc2ccccc2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.