Using C[Si](C)(C)CCOCn1c(C2CCCC2)nc2nc(Cl)nc(Cl)c21, O=C([O-])[O-] to produce C[Si](C)(C)CCOCn1c(C2CCCC2)nc2nc(Cl)[nH]c(=O)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.