Using COc1cc(C(=O)C=CN(C)C)c([N+](=O)[O-])cc1OCC1(NC(=O)OCc2ccccc2)CC1 to produce COc1cc2c(O)ccnc2cc1OCC1(NC(=O)OCc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.