Using CC(C)(C)[Si](C)(C)Cl, COCC(O)Cn1c(=O)cnn(-c2ccc(Cl)c(C(=O)OC)c2)c1=O to produce COCC(Cn1c(=O)cnn(-c2ccc(Cl)c(C(=O)O)c2)c1=O)O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.