∀ {V : Type v} [inst : CategoryTheory.Category.{w, v} V] [inst_1 : CategoryTheory.MonoidalCategory V] {C : Type u}
  [inst_2 : CategoryTheory.EnrichedCategory V C] {D : Type u₁} [inst_3 : CategoryTheory.EnrichedCategory V D]
  {E : Type u₂} [inst_4 : CategoryTheory.EnrichedCategory V E] {F G : CategoryTheory.EnrichedFunctor V C D}
  {H I : CategoryTheory.EnrichedFunctor V D E} (α : F ⟶ G) (β : H ⟶ I),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.EnrichedCat.whiskerLeft F β)
      (CategoryTheory.EnrichedCat.whiskerRight α I) =
    CategoryTheory.CategoryStruct.comp (CategoryTheory.EnrichedCat.whiskerRight α H)
      (CategoryTheory.EnrichedCat.whiskerLeft G β)