The molecule is an organosulfonate oxoanion obtained by deprotonation of the sulfo group of 3alpha,7alpha-dihydroxy-5beta-cholane-24-sulfonic acid. It is a conjugate base of a 3alpha,7alpha-dihydroxy-5beta-cholane-24-sulfonic acid.
(4R)-4-[(3R,5S,7R,8R,9S,10S,13R,14S,17R)-3,7-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentane-1-sulfonate