Using C[Si](C)(C)CCS, OC(c1cc(F)cc(F)c1)(C(F)(F)F)C(F)(F)F to produce C[Si](C)(C)CCSc1cc(F)cc(C(O)(C(F)(F)F)C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.