Using O=C1COc2ccc(Br)cc2-c2cc3ccccc3n2C1, C[Si](C)(C)C(F)(F)F to produce OC1(C(F)(F)F)COc2ccc(Br)cc2-c2cc3ccccc3n2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.