Splenda
Sucralose is the sugar sucrose with three of the hydroxyl groups replaced by chlorine atoms. In the process, the stereochemistry of the glucose half of the molecule is changed, making it more like galactose.
Sucralose is 600 times sweeter than sugar, but has no calories.
Sucralose is used in a wide variety of no-calorie and low-calorie foods, such as tabletop sweeteners, baked goods, desserts, toothpastes and mouthwashes, and diet drinks.
galactose: InChI=1/C6H12O6/c7-1-2-3(8)4(9)5(10)6(11)12-2/h2-11H,1H2/t2-,3+,4+,5-,6+/m1/s1