Using NN, COC(=O)c1c(OC)nc(-c2ccccc2)c(N)c1C(=O)OC to produce COc1nc(-c2ccccc2)c(N)c2c(=O)[nH][nH]c(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.