Using COC(=O)Cn1c(=O)c([N+](=O)[O-])cn(Cc2ccccc2)c1=O to produce COC(=O)Cn1c(=O)c(N)cn(Cc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.