∀ {C : Type u_4} [inst : CategoryTheory.Category.{u_3, u_4} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  {D : Type u_6} [inst_2 : CategoryTheory.Category.{u_5, u_6} D] [inst_3 : CategoryTheory.MonoidalCategory D]
  {E : Type u_2} [inst_4 : CategoryTheory.Category.{u_1, u_2} E] [inst_5 : CategoryTheory.MonoidalCategory E]
  (F : CategoryTheory.Functor C D) (G : CategoryTheory.Functor D E) [inst_6 : F.LaxMonoidal] [inst_7 : G.LaxMonoidal]
  {X Y : C} (x : X ⟶ Y) (x_1 : C),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight ((F.comp G).map x) ((F.comp G).obj x_1))
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.LaxMonoidal.μ G (F.obj Y) (F.obj x_1))
        (G.map (CategoryTheory.Functor.LaxMonoidal.μ F Y x_1))) =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.LaxMonoidal.μ G (F.obj X) (F.obj x_1))
        (G.map (CategoryTheory.Functor.LaxMonoidal.μ F X x_1)))
      ((F.comp G).map (CategoryTheory.MonoidalCategoryStruct.whiskerRight x x_1))