{C : Type u₁} →
  [inst : CategoryTheory.Category.{v₁, u₁} C] →
    {E : Type u₃} →
      [inst_1 : CategoryTheory.Category.{v₃, u₃} E] →
        {D : Type u₁} →
          [inst_2 : CategoryTheory.Category.{v₁, u₁} D] →
            (S : CategoryTheory.Functor C D) →
              (T : CategoryTheory.Functor D E) →
                CategoryTheory.CostructuredArrow.functor (S.comp T) ⟶ CategoryTheory.CostructuredArrow.functor T