Using O=S(=O)(Oc1ccc(Cl)nc1-c1cc2c(F)cccc2[nH]1)C(F)(F)F, C=C[Sn](CCCC)(CCCC)CCCC to produce C=Cc1ccc(Cl)nc1-c1cc2c(F)cccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.