Using COCCCNC(=O)Nc1snc(-c2ccc([N+](=O)[O-])cc2)c1C(N)=O to produce COCCCNC(=O)Nc1snc(-c2ccc(N)cc2)c1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.