The molecule is an alpha-L-rhamnoside consisting of butanal having an alpha-L-rhamnosyloxy group attached at the 4-position. It is an alpha-L-rhamnoside and an aldehyde.
4-[(2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxybutanal