葫芦素B2-O-BETA-D-葡萄糖苷 、
乙酸酐 生成 [(2R,3S,4S,5R,6S)-3,4,5-triacetyloxy-6-[[(2S,8S,9R,10R,13R,14S,16R,17R)-16-acetyloxy-17-[(E,2R)-6-acetyloxy-2-hydroxy-6-methyl-3-oxohept-4-en-2-yl]-4,4,9,13,14-pentamethyl-3,11-dioxo-2,7,8,10,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-2-yl]oxy]oxan-2-yl]methyl acetate