∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.Abelian C] [CategoryTheory.HasExt C]
  {S : CategoryTheory.ShortComplex C},
  CategoryTheory.Localization.HasSmallLocalizedShiftedHom (HomologicalComplex.quasiIso C (ComplexShape.up ℤ)) ℤ
    (S.map (CochainComplex.singleFunctor C 0)).X₃ (S.map (CochainComplex.singleFunctor C 0)).X₁