Showing structure for 6-[5-(acetyloxy)-4,9a-dimethyl-2,7-dioxo-tetrahydro-3h-furo[2,3-c]oxocin-4-yl]-5-(formyloxy)-3-(furan-3-yl)-3a-methyl-7-methylidene-hexahydroindeno[1,7a-b]oxiren-4-yl 2-(acetyloxy)-3-methylpentanoate