∀ (J : Type u_1) (C : Type u_2) [inst : CategoryTheory.Category.{v_1, u_1} J]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} C] [inst_2 : CategoryTheory.Limits.HasZeroMorphisms C]
  (F : CategoryTheory.Functor J (CategoryTheory.ShortComplex C)),
  ((CategoryTheory.ShortComplex.FunctorEquivalence.inverse J C).obj F).g =
    F.whiskerLeft CategoryTheory.ShortComplex.π₂Toπ₃