Using CCOC(=O)C=C(CC)c1cc([Si](C)(C)C)nc(OC)c1COCOC to produce CCC(=CCO)c1cc([Si](C)(C)C)nc(OC)c1COCOC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.