∀ {C : Type u_1} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] {X Y : C} [inst_3 : CategoryTheory.ExactPairing X Y],
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight (CategoryTheory.CategoryStruct.comp (η_ X Y) (β_ Y X).inv) Y)
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategoryStruct.associator Y X Y).hom
        (CategoryTheory.MonoidalCategoryStruct.whiskerLeft Y
          (CategoryTheory.CategoryStruct.comp (β_ X Y).hom (ε_ X Y)))) =
    CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategoryStruct.leftUnitor Y).hom
      (CategoryTheory.MonoidalCategoryStruct.rightUnitor Y).inv