Without prejudice to other Community provisions, the presence of a sweetener in a foodstuff is permissible: - in compound foodstuffs with no added sugar or energy-reduced, in compound dietary foodstuffs intended for a low-calorie diet and in compound foodstuffs with a long shelf-life, other than those mentioned in Article 2(3), insofar as the sweetener is permitted in one of the ingredients of the compound foodstuff, ...