Using COc1ccnc2c(NS(=O)(=O)c3ccc(C(F)(F)F)cc3[N+](=O)[O-])c(Cl)ccc12 to produce COc1ccnc2c(NS(=O)(=O)c3ccc(C(F)(F)F)cc3N)c(Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.