Using COC(=O)C(Oc1ccc(F)cc1F)C(O)c1c([N+](=O)[O-])cnn1COCC[Si](C)(C)C to produce C[Si](C)(C)CCOCn1ncc2[nH]c(=O)c(Oc3ccc(F)cc3F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.