Using COC(=O)C1N=C(c2ccc([N+](=O)[O-])c(OC)c2)OC1C to produce COC(=O)c1nc(-c2ccc([N+](=O)[O-])c(OC)c2)oc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.