Using C=O, CCCC1(C(CC=CI)O[Si](C)(C)C(C)(C)C)CCC1 to produce CCCC1(C(CC=CCO)O[Si](C)(C)C(C)(C)C)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.