∀ {C : Type u₁} {D : Type u₂} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.Category.{v₂, u₂} D]
  {L : CategoryTheory.Functor C D} {F : CategoryTheory.Functor D C} {G : CategoryTheory.Functor C D}
  {R : CategoryTheory.Functor D C} (q : CategoryTheory.Adjunction.Quadruple L F G R), q.op.adj₂ = q.adj₂.op