∀ {C : Type u_1} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Preadditive C]
  [inst_2 : CategoryTheory.Limits.HasFiniteCoproducts C],
  CategoryTheory.Preadditive.DoldKan.equivalence.counitIso = AlgebraicTopology.DoldKan.N₂Γ₂