Using COc1cc(-c2nc(C)c(C(C)=O)s2)cc(OC)c1OC, NNC(N)=O to produce COc1cc(-c2nc(C)c(C(C)=NNC(N)=O)s2)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.