∀ {C : Type u_1} {D : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} C]
  [inst_1 : CategoryTheory.MonoidalCategory C] [inst_2 : CategoryTheory.Category.{v_2, u_2} D]
  (F : CategoryTheory.Functor C (CategoryTheory.Functor D D)) [inst_3 : F.Monoidal] (d : D) (c c' : C),
  (CategoryTheory.MonoidalCategory.MonoidalRightActionStruct.actionAssocIso d c c').hom =
    (CategoryTheory.Functor.OplaxMonoidal.δ F c c').app d