Using O=[N+]([O-])O, COC(=O)COc1ccc(C)[n+]([O-])c1 to produce Cc1cc([N+](=O)[O-])c(OCC(=O)O)c[n+]1[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.