Using O=c1[nH]c2cc([N+](=O)[O-])ccc2n(CP(=O)(O)O)c1=O to produce Nc1ccc2c(c1)[nH]c(=O)c(=O)n2CP(=O)(O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.