Using [N-]=[N+]=[N-], O=C1c2ccccc2C(=O)N1OCCOCCBr to produce [N-]=[N+]=NCCOCCON1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.