Using C[Si](C)(C)OC1(C(F)(F)F)CCCCc2c1[nH]c1c(Cl)cc(Cl)cc21 to produce OC1(C(F)(F)F)CCCCc2c1[nH]c1c(Cl)cc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.