Using COC(=O)[C@@H](NC(=O)c1ccc([N+](=O)[O-])c(OC)c1)[C@@H](C)O to produce COC(=O)C1N=C(c2ccc([N+](=O)[O-])c(OC)c2)OC1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.