Using COc1cc(C2OCCO2)ccc1Oc1ccc(NC=O)c([N+](=O)[O-])c1 to produce COc1cc(C2OCCO2)ccc1Oc1ccc(NC=O)c(N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.