(S)-6-(1-Ethoxy-ethoxy)-3-((3R,3aS,5S)-3-methoxymethoxymethyl-5,7-dimethyl-6-oxo-2,3,3a,4,5,6-hexahydro-1H-inden-5-yl)-hexanoic acid methyl ester                                                                                                                                                                                                                                                                                                          生成                                                 
3-((1R,3aR,4S,7S,8R,9aS)-1-Methoxymethoxymethyl-4,8-dimethyl-5,10-dioxo-decahydro-4,8-methano-cyclopentacycloocten-7-yl)-propionic acid