2-((R)-4-((3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-三羟基-10,13-二甲基十六氢-1H-环戊二烯并[a]菲-17-基)戊酰胺基)乙磺酸钠盐水合物,97% TLC