Using NC=O, CCCn1c(=O)cc(N)n(-c2ccc(Cl)cc2)c1=O to produce CCCn1c(=O)c2[nH]cnc2n(-c2ccc(Cl)cc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.