Using CCOC(C)=O, Cc1c([N+](=O)[O-])ccc2c1ncn2C(=O)OC(C)(C)C to produce CCCCOC(=O)n1cnc2c(C)c(N)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.