Acetic acid 2-((6R,8S,9R,10S,11S,13S,14S)-2-chloro-6,9-difluoro-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15-decahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxo-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
potassium permanganate   、                                                                                                  
甲酸                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 Acetic acid 2-((6R,8S,9R,10S,11S,13S,14S,16R,17S)-2-chloro-6,9-difluoro-11,16,17-trihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxo-ethyl ester