Using COc1ccc2c(c1[N+](=O)[O-])C(=O)N(C1CCC(=O)NC1=O)C2=O to produce COc1ccc2c(c1N)C(=O)N(C1CCC(=O)NC1=O)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.