The molecule is a steroid glucosiduronic acid that is 17alpha-estradiol having a single beta-D-glucuronic acid residue attached at position 3. It derives from a 17alpha-estradiol. It is a conjugate acid of a 17alpha-estradiol 3-glucosiduronate.
(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-[[(8R,9S,13S,14S,17R)-17-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl]oxy]oxane-2-carboxylic acid