∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  {D : Type u_4} [inst_2 : CategoryTheory.Category.{u_3, u_4} D] (e : C ≌ D) (X : D),
  e.inverse.map (CategoryTheory.MonoidalCategoryStruct.rightUnitor X).hom =
    (((e.unitIso.app
              (CategoryTheory.MonoidalCategoryStruct.tensorObj (e.inverse.obj X)
                (e.inverse.obj (CategoryTheory.MonoidalCategoryStruct.tensorUnit D)))).symm ≪≫
          CategoryTheory.MonoidalCategory.tensorIso (CategoryTheory.Iso.refl (e.inverse.obj X))
            (e.unitIso.app (CategoryTheory.MonoidalCategoryStruct.tensorUnit C)).symm) ≪≫
        CategoryTheory.MonoidalCategoryStruct.rightUnitor (e.inverse.obj X)).hom