Using COc1cc(CNC(=O)c2cc(Br)ccc2F)ccc1Cl, CCCCC([Sn])=C(CCCC)CCCC to produce C=Cc1ccc(F)c(C(=O)NCc2ccc(Cl)c(OC)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.