Using C=C[Si](Cl)(Cl)Cl, O=C(O)c1ccccc1 to produce C=C[Si](OC(=O)c1ccccc1)(OC(=O)c1ccccc1)OC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.