Using OCC(Cl)(Cl)Cl, CCOC(Cc1ccc(C(C)(C)O[SiH2]C(C)(C)C)cc1)C(=O)O to produce CCOC(Cc1ccc(C(C)(C)O[SiH2]C(C)(C)C)cc1)C(=O)OCC(Cl)(Cl)Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.