{C : Type u₁} →
  {D : Type u₂} →
    {H : Type u₃} →
      [inst : CategoryTheory.Category.{v₁, u₁} C] →
        [inst_1 : CategoryTheory.Category.{v₂, u₂} D] →
          [inst_2 : CategoryTheory.Category.{v₃, u₃} H] →
            (F' : CategoryTheory.Functor D H) →
              {F : CategoryTheory.Functor C H} →
                {L : CategoryTheory.Functor C D} →
                  (α : F ⟶ L.comp F') →
                    (W : CategoryTheory.MorphismProperty C) →
                      [F.HasPointwiseRightDerivedFunctor W] →
                        [inst_4 : L.IsLocalization W] →
                          [F'.IsRightDerivedFunctor α W] →
                            (CategoryTheory.Functor.LeftExtension.mk F' α).IsPointwiseLeftKanExtension