∀ {C : Type u₁} {inst : CategoryTheory.Category.{v₁, u₁} C} {inst_1 : CategoryTheory.MonoidalCategory C} {D : Type u₂}
  {inst_2 : CategoryTheory.Category.{v₂, u₂} D} {inst_3 : CategoryTheory.MonoidalCategory D}
  (F : CategoryTheory.Functor C D) [self : F.OplaxMonoidal] {X Y : C} (X' : C) (f : X ⟶ Y) {Z : D}
  (h : CategoryTheory.MonoidalCategoryStruct.tensorObj (F.obj X') (F.obj Y) ⟶ Z),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.OplaxMonoidal.δ F X' X)
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.MonoidalCategoryStruct.whiskerLeft (F.obj X') (F.map f)) h) =
    CategoryTheory.CategoryStruct.comp (F.map (CategoryTheory.MonoidalCategoryStruct.whiskerLeft X' f))
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.OplaxMonoidal.δ F X' Y) h)