英文名称
[6-[6-[[10-formyl-10b-hydroxy-3a,5b-dimethyl-3-[1-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyethyl]-2,3,4,5,5a,6,7,8,9,10a-decahydro-1H-cyclopenta[a]fluoren-8-yl]oxy]-4-methoxy-2-methyloxan-3-yl]oxy-5-hydroxy-4-methoxy-2-methyloxan-3-yl] 2-methylbut-2-enoate