Showing structure for methyl (1r,4ar,5r,7s,8r,10as)-5,8-bis(acetyloxy)-7-(3-methoxy-3-oxoprop-1-en-2-yl)-1,4a-dimethyl-2-oxo-4,5,6,7,8,9,10,10a-octahydro-3h-phenanthrene-1-carboxylate