[(1S,5S,9S,10S,11S,12R,14R,17R)-3-(dimethylamino)-14-ethenyl-10-hydroxy-8,8,12,14,17-pentamethyl-16-oxo-2,4,13-trioxatetracyclo[7.7.1.01,12.05,17]heptadecan-11-yl] 4-methylpiperazine-1-carboxylate   、                                                                                      
甲醇   、                                                                                      
水                                                                                                                                                                                                                                                                                                          生成                                                 
8,13-Epoxy-7β-(4-methylpiperazino)carbonyloxy-1α,6β,9α-trihydroxylabd-14-en-11-one