1) Sugar alcohol 
Fucitol, also known as L-fucitol, 6-deoxy-L-galactitol, and (2``R``,3``S``,4``R``,5``S``)-hexane-1,2,3,4,5-pentol, is a sugar alcohol derived from fucoidin which is found in the North Atlantic seaweed Fucus vesiculosus or by the reduction of fucose. ...