甲基 (16R,17R,18R,19R,20R,21R,22R,23R,24R)-7,21-二(乙酰氧基)-5,17,19,23,24-五羟基-4,8,12,16,18,22,24,26-八甲基-11,27-二羰基-11,16,17,18,19,20,21,22,23,24-十氢-10H-6,9-亚甲基[1,3]二噁英并[4,5,6-uv][4]苯并吖环二十三英-20-羧酸酯
11031-82-6