Using O=c1[nH]c(=O)n(-c2cccc([N+](=O)[O-])c2)c2ccccc12, BrCC1CC1 to produce O=c1c2ccccc2n(-c2cccc([N+](=O)[O-])c2)c(=O)n1CC1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.