Using COc1cccc(-c2ccc(C=O)cc2)n1, C[Si](C)(C)C(F)(F)F to produce COc1cccc(-c2ccc(C(O)C(F)(F)F)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.