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