Using CC(=O)OC(C)=O, COc1ccc(-c2nc(C)c([N+](=O)[O-])[nH]2)cc1 to produce COc1ccc(-c2nc(C)c(NC(C)=O)[nH]2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.