Using COC1=C(OC)C(=O)C(CCC(=O)Oc2ccc([N+](=O)[O-])cc2)=C(C)C1=O, C[C@H](N)C(=O)O to produce COC1=C(OC)C(=O)C(CCC(=O)N[C@@H](C)C(=O)O)=C(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.