∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C] {D : Type u₂}
  [inst_2 : CategoryTheory.Category.{v₂, u₂} D] (e : C ≌ D) (X Y : D),
  CategoryTheory.MonoidalCategoryStruct.tensorObj X Y =
    e.functor.obj (CategoryTheory.MonoidalCategoryStruct.tensorObj (e.inverse.obj X) (e.inverse.obj Y))