Using COC(=O)c1ccc(C=O)cc1, C[Si](C)(C)c1cccc(C[PH3+])c1 to produce COC(=O)c1ccc(C=Cc2cccc([Si](C)(C)C)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.