Taurolithocholic Acid Impurity 6

2- (((((3R,5R,7S,8R,9S,10S,13R,14S,17R) -3-hydroxy-10,13-dimethyl-17- ((R) -5-oxo-5- ((2-sulfoethyl) amino) pentan-2-yl) hexadecahydro-1H-cyclopenta[a]phenanthren-7-yl) oxy) carbonyl) amino) ethane-1-sulfonic acid