∀ {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] (e : C ≌ D)
  [inst_4 : e.functor.Monoidal] [inst_5 : e.inverse.Monoidal] [e.IsMonoidal] (X Y : C),
  CategoryTheory.CategoryStruct.comp (e.unit.app (CategoryTheory.MonoidalCategoryStruct.tensorObj X Y))
      (e.inverse.map (CategoryTheory.Functor.OplaxMonoidal.δ e.functor X Y)) =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.tensorHom (e.unit.app X) (e.unitIso.hom.app Y))
      (CategoryTheory.Functor.LaxMonoidal.μ e.inverse (e.functor.obj X) (e.functor.obj Y))