Showing structure for methyl 6-(acetyloxy)-7,13a-dihydroxy-5a-(1-hydroxyethyl)-7b,9a,15a-trimethyl-12-methylidene-3-oxo-5h,6h,7h,7ah,8h,9h,10h,11h,13h,14h,15h,15bh-chryseno[2,1-c]oxepine-13b-carboxylate