Using CC(C)(C)c1ccc(C(=O)NCC=O)c([N+](=O)[O-])c1, CC(C)(C)c1ccc2c(c1)N=CCNC2=O to produce COC1CNC(=O)c2ccc(C(C)(C)C)cc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.