Using CC(C)(C)OC(=O)NCc1cccc(CNc2c([N+](=O)[O-])c(Cl)nc3ccccc23)c1 to produce CC(C)(C)OC(=O)NCc1cccc(CNc2c(N)c(Cl)nc3ccccc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.