Using COC(=O)C(=[N+]=[N-])C(=O)OC, C=C(CCO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C)c1ccc(Cl)c(Cl)c1 to produce COC(=O)C1(C(=O)OC)CC1(CCO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.