∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {S : CategoryTheory.ShortComplex Cᵒᵖ} (h : S.HomologyData),
  (CategoryTheory.CategoryStruct.comp h.right.unop.π
        (CategoryTheory.CategoryStruct.comp h.iso.unop.hom h.left.unop.ι)).op =
    (CategoryTheory.CategoryStruct.comp h.right.unop.i h.left.unop.p).op