Using CN(C)C=O, O=C1c2ccccc2C(=O)c2c1cccc2[N+](=O)[O-] to produce O=C1c2ccccc2C(=O)c2c(O)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.