Definition associatorisiso_from_monoidallaws {C : category} {MD : monoidalcategory_data C} (ML : monoidal_laws MD) : associator_is_natiso MD := pr1 (pr2 (pr2 (pr2 ML))).
Require Import UniMath.Foundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Isos.