∀ {C : Type u_1} [inst : CategoryTheory.Category.{u_2, u_1} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] (X Y Z : Cᵒᵖ),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategoryStruct.associator X Y Z).hom
      (CategoryTheory.CategoryStruct.comp
        (β_ (Opposite.unop (CategoryTheory.MonoidalCategoryStruct.tensorObj Y Z)) (Opposite.unop X)).op.hom
        (CategoryTheory.MonoidalCategoryStruct.associator Y Z X).hom) =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight (β_ (Opposite.unop Y) (Opposite.unop X)).op.hom Z)
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategoryStruct.associator Y X Z).hom
        (CategoryTheory.MonoidalCategoryStruct.whiskerLeft Y (β_ (Opposite.unop Z) (Opposite.unop X)).op.hom))