∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] {M : Type u_1} [inst_1 : CategoryTheory.Category.{v_1, u_1} M]
  [inst_2 : CategoryTheory.MonoidalCategory M] (F : CategoryTheory.Functor M (CategoryTheory.Functor C C)) (X : C)
  [inst_3 : F.Monoidal] {Z : C}
  (h : (CategoryTheory.MonoidalCategoryStruct.tensorUnit (CategoryTheory.Functor C C)).obj X ⟶ Z),
  CategoryTheory.CategoryStruct.comp ((CategoryTheory.Functor.LaxMonoidal.ε F).app X)
      (CategoryTheory.CategoryStruct.comp ((CategoryTheory.Functor.OplaxMonoidal.η F).app X) h) =
    h