∀ {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) [inst_4 : F.Monoidal] (X Y : C) (T : D),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight (CategoryTheory.Functor.LaxMonoidal.μ F X Y) T)
      (CategoryTheory.MonoidalCategoryStruct.whiskerRight (CategoryTheory.Functor.OplaxMonoidal.δ F X Y) T) =
    CategoryTheory.CategoryStruct.id
      (CategoryTheory.MonoidalCategoryStruct.tensorObj
        (CategoryTheory.MonoidalCategoryStruct.tensorObj (F.obj X) (F.obj Y)) T)