{C : Type u} →
  [inst : CategoryTheory.Category.{v, u} C] →
    [inst_1 : CategoryTheory.Abelian C] →
      [inst_2 : HasDerivedCategory C] →
        {S : CategoryTheory.ShortComplex C} → S.ShortExact → CategoryTheory.Pretriangulated.Triangle (DerivedCategory C)