The molecule is a steroid glucosiduronic acid that is estriol in which the phenolic hydrogen has been replaced by a beta-D-glucuronyl residue. It has a role as a human urinary metabolite. It is a steroid glucosiduronic acid, a beta-D-glucosiduronic acid, a 3-hydroxy steroid, a member of phenols and a 17beta-hydroxy steroid. It derives from an estriol. It is a conjugate acid of an estriol 16-O-(beta-D-glucuronide)(1-).
(2S,3S,4S,5R,6R)-6-[[(8R,9S,13S,14S,16R,17R)-3,17-dihydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-16-yl]oxy]-3,4,5-trihydroxyoxane-2-carboxylic acid