∀ {B : Type u₁} [inst : CategoryTheory.Bicategory B] {C : Type u₂} [inst_1 : CategoryTheory.Bicategory C]
  (F : CategoryTheory.Pseudofunctor B C) {a b c d : B} (f : a ⟶ b) (g : b ⟶ c) (h : c ⟶ d),
  CategoryTheory.CategoryStruct.comp (F.mapComp (CategoryTheory.CategoryStruct.comp f g) h).hom
      (CategoryTheory.Bicategory.whiskerRight (F.mapComp f g).hom (F.map h)) =
    CategoryTheory.CategoryStruct.comp (F.map₂ (CategoryTheory.Bicategory.associator f g h).hom)
      (CategoryTheory.CategoryStruct.comp (F.mapComp f (CategoryTheory.CategoryStruct.comp g h)).hom
        (CategoryTheory.CategoryStruct.comp (CategoryTheory.Bicategory.whiskerLeft (F.map f) (F.mapComp g h).hom)
          (CategoryTheory.Bicategory.associator (F.map f) (F.map g) (F.map h)).inv))