(1R,3aR,6R,7aR)-1-[(2R)-6-[tert-butyl(dimethyl)silyl]oxy-6-methylheptan-2-yl]-7a-methyl-6-[2-(oxan-2-yloxy)ethyl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-one 、
骨化醇杂质DCP 生成 [(6R)-6-[(1R,3aS,4E,6S,7aR)-4-[(2Z)-2-[(3S,5R)-3,5-bis[[tert-butyl(dimethyl)silyl]oxy]-2-methylidenecyclohexylidene]ethylidene]-7a-methyl-6-[2-(oxan-2-yloxy)ethyl]-2,3,3a,5,6,7-hexahydro-1H-inden-1-yl]-2-methylheptan-2-yl]oxy-tert-butyl-dimethylsilane