∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C] {X Y Z : C}
  [inst_2 : CategoryTheory.HasLeftDual X] [inst_3 : CategoryTheory.HasLeftDual Y]
  [inst_4 : CategoryTheory.HasLeftDual Z] {f : X ⟶ Y} {g : Y ⟶ Z},
  (ᘁCategoryTheory.CategoryStruct.comp f g) = CategoryTheory.CategoryStruct.comp (ᘁg) (ᘁf)