Using C[Si](C)(C)OC(C#N)c1cc(Br)ccc1F, COC1CCC(=O)CC1 to produce COC1CCC(O)(C(=O)c2cc(Br)ccc2F)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.