6α-methylprednisolone 21-hemisuberate

4-[[(6S,8S,9S,10R,11S,13S,14S,17R)-11-羟基-17-(2-羟基乙酰基)-6,10,13-三甲基-3-氧代-7,8,9,11,12,14,15,16-八氢-6H-环戊并[a]菲-17-基]氧基]-4-氧代丁酸