Using O=c1[nH]c2cc(C(F)(F)F)c([N+](=O)[O-])cc2n(C2CCCCC2)c1=O to produce Nc1cc2c(cc1C(F)(F)F)[nH]c(=O)c(=O)n2C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.