∀ {B : Type u₁} {C : Type u₂} [inst : CategoryTheory.Bicategory B] [inst_1 : CategoryTheory.Bicategory.Strict B]
  [inst_2 : CategoryTheory.Bicategory C] (F : CategoryTheory.Pseudofunctor B C) {b₀ b₁ b₂ b₃ : B} (f₀₁ : b₀ ⟶ b₁)
  (f₁₂ : b₁ ⟶ b₂) (f₂₃ : b₂ ⟶ b₃) (f₀₂ : b₀ ⟶ b₂) (f₁₃ : b₁ ⟶ b₃) (f : b₀ ⟶ b₃)
  (h₀₂ : CategoryTheory.CategoryStruct.comp f₀₁ f₁₂ = f₀₂) (h₁₃ : CategoryTheory.CategoryStruct.comp f₁₂ f₂₃ = f₁₃)
  (hf : CategoryTheory.CategoryStruct.comp f₀₂ f₂₃ = f),
  CategoryTheory.CategoryStruct.comp (F.mapComp' f₀₂ f₂₃ f ⋯).hom
      (CategoryTheory.Bicategory.whiskerRight (F.mapComp' f₀₁ f₁₂ f₀₂ h₀₂).hom (F.map f₂₃)) =
    CategoryTheory.CategoryStruct.comp (F.mapComp' f₀₁ f₁₃ f ⋯).hom
      (CategoryTheory.CategoryStruct.comp
        (CategoryTheory.Bicategory.whiskerLeft (F.map f₀₁) (F.mapComp' f₁₂ f₂₃ f₁₃ h₁₃).hom)
        (CategoryTheory.Bicategory.associator (F.map f₀₁) (F.map f₁₂) (F.map f₂₃)).inv)