∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.CartesianMonoidalCategory C]
  [inst_2 : CategoryTheory.BraidedCategory C] (W X Y Z : C),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategory.tensorδ W X Y Z)
      (CategoryTheory.SemiCartesianMonoidalCategory.fst (CategoryTheory.MonoidalCategoryStruct.tensorObj W X)
        (CategoryTheory.MonoidalCategoryStruct.tensorObj Y Z)) =
    CategoryTheory.MonoidalCategoryStruct.tensorHom (CategoryTheory.SemiCartesianMonoidalCategory.fst W Y)
      (CategoryTheory.SemiCartesianMonoidalCategory.fst X Z)