Using COCn1c(-c2ccc(Cl)cc2)nc(C(=O)c2ccccc2)c1-c1ccncc1 to produce O=C(c1ccccc1)c1nc(-c2ccc(Cl)cc2)[nH]c1-c1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.