∀ {C : Type u_4} [inst : CategoryTheory.Category.{u_3, u_4} C] [inst_1 : CategoryTheory.MonoidalCategory C]
  {D : Type u_6} [inst_2 : CategoryTheory.Category.{u_5, u_6} D] [inst_3 : CategoryTheory.MonoidalCategory D]
  {E : Type u_2} [inst_4 : CategoryTheory.Category.{u_1, u_2} E] [inst_5 : CategoryTheory.MonoidalCategory E]
  (F : CategoryTheory.Functor C D) (G : CategoryTheory.Functor D E) [inst_6 : F.Monoidal] [inst_7 : G.Monoidal],
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.OplaxMonoidal.η (F.comp G))
      (CategoryTheory.Functor.LaxMonoidal.ε (F.comp G)) =
    CategoryTheory.CategoryStruct.id ((F.comp G).obj (CategoryTheory.MonoidalCategoryStruct.tensorUnit C))