Using CC(C)(CNc1c([N+](=O)[O-])cnc2cccnc12)NC(=O)OC(C)(C)C to produce CC(C)(CNc1c(N)cnc2cccnc12)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.