∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] {W X Y Z : C} [inst_1 : CategoryTheory.MonoidalCoherence X Y]
  (f : W ⟶ X) (g : Y ⟶ Z),
  CategoryTheory.monoidalComp f g =
    CategoryTheory.CategoryStruct.comp f (CategoryTheory.CategoryStruct.comp CategoryTheory.MonoidalCoherence.iso.hom g)