∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] {X Y : CategoryTheory.Comon C} (f : X ⟶ Y) (X' : CategoryTheory.Comon C),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight ((CategoryTheory.Comon.forget C).map f)
        ((CategoryTheory.Comon.forget C).obj X'))
      (CategoryTheory.Iso.refl
          (CategoryTheory.MonoidalCategoryStruct.tensorObj ((CategoryTheory.Comon.forget C).obj Y)
            ((CategoryTheory.Comon.forget C).obj X'))).hom =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.Iso.refl
          (CategoryTheory.MonoidalCategoryStruct.tensorObj ((CategoryTheory.Comon.forget C).obj X)
            ((CategoryTheory.Comon.forget C).obj X'))).hom
      ((CategoryTheory.Comon.forget C).map (CategoryTheory.MonoidalCategoryStruct.whiskerRight f X'))