Using CC(C)(C)[Si](C)(C)OCC(CO)COc1ccc(OC(F)(F)F)cc1, II to produce CC(C)(C)[Si](C)(C)OCC(CI)COc1ccc(OC(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.