∀ (C : Type u_2) [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.MonoidalCategory C] {X Y : C}
  (X' : C) (f : X ⟶ Y),
  CategoryTheory.CategoryStruct.comp
      (CategoryTheory.MonoidalCategoryStruct.whiskerLeft
        ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.obj X')
        ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.map f))
      (CategoryTheory.CategoryStruct.id
        (CategoryTheory.MonoidalCategoryStruct.tensorObj
          ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.obj X')
          ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.obj Y))) =
    CategoryTheory.CategoryStruct.comp
      (CategoryTheory.CategoryStruct.id
        (CategoryTheory.MonoidalCategoryStruct.tensorObj
          ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.obj X')
          ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.obj X)))
      ((CategoryTheory.MonoidalOpposite.mopMopEquivalence C).inverse.map
        (CategoryTheory.MonoidalCategoryStruct.whiskerLeft X' f))