Using CCO[C@@H](Cc1ccc(-c2nc([N+](=O)[O-])nn2C)cc1)C(=O)OC to produce CCO[C@@H](Cc1ccc(-c2nc(N)nn2C)cc1)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.