Using COc1cc(C2=Nc3cccnc3NN2)cc(OC)c1OC to produce COc1cc(C2=Nc3cccnc3N(C(C)=O)N2C(C)=O)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.