Using C[Si](C)(C)OC1(C(F)(F)F)CCCc2c1[nH]c1c(C(F)(F)F)cc(C#N)cc21 to produce N#Cc1cc(C(F)(F)F)c2[nH]c3c(c2c1)CCCC3(O)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.