∀ {J : Type u_1} {C : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} J]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} C] [inst_2 : CategoryTheory.CartesianMonoidalCategory C]
  {F₁ F₁' : CategoryTheory.Functor J C} (f : F₁ ⟶ F₁') (F₂ : CategoryTheory.Functor J C) (j : J) {Z : C}
  (h : F₁'.obj j ⟶ Z),
  CategoryTheory.CategoryStruct.comp ((CategoryTheory.MonoidalCategoryStruct.whiskerRight f F₂).app j)
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.SemiCartesianMonoidalCategory.fst (F₁'.obj j) (F₂.obj j)) h) =
    CategoryTheory.CategoryStruct.comp (CategoryTheory.SemiCartesianMonoidalCategory.fst (F₁.obj j) (F₂.obj j))
      (CategoryTheory.CategoryStruct.comp (f.app j) h)