Using FC(F)CCCC1CC[SiH](Br)CC1, FC(F)(F)c1ccc(C2CC[SiH](Cl)CC2)cc1 to produce CCCC1CC[SiH]([SiH]2CCC(c3ccc(C(F)(F)F)cc3)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.