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