Using COc1ccc2ccc(OS(=O)(=O)C(F)(F)F)cc2c1, C[Sn](C)(C)c1cc2c(cc1[N+](=O)[O-])OCO2 to produce COc1ccc2ccc(-c3cc4c(cc3[N+](=O)[O-])OCO4)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.