∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.MonoidalCategory C] {D : Type u₂}
  [inst_2 : CategoryTheory.Category.{v₂, u₂} D] [inst_3 : CategoryTheory.MonoidalCategory D]
  {F : CategoryTheory.Functor C D} [inst_4 : F.LaxMonoidal] (X : C) [inst_5 : CategoryTheory.MonObj X],
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Functor.LaxMonoidal.ε F) (F.map CategoryTheory.MonObj.one) =
    CategoryTheory.MonObj.one