Using Cc1c(NCCCCNC(=O)OC(C)(C)C)c([N+](=O)[O-])c2nnnn2c1C to produce Cc1c(NCCCCNC(=O)OC(C)(C)C)c(N)c2nnnn2c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.