that's inneresting...
almost exactly same as sugar (ie, a glucose and a fructose molecule), but slightly different bond (1,6 vs 1,2), same energy, but low GI...
http://www.beneo-palatinit.com/en/Food_Ingredients/Isomaltulose/What_is_Isomaltulose/Palatinose-Brochure_EN_1.pdf
70g of it is about...