Showing structure for methyl 2-[(3r,4r)-4-[(1s,3s,6r,7s,9s,10r)-9-(acetyloxy)-6-(2-hydroxy-5-oxo-2h-furan-3-yl)-7-methyl-11-methylidene-4-oxo-2,5-dioxatricyclo[5.4.0.0?,?]undecan-10-yl]-2,2,4-trimethyl-7-oxo-3h-oxepin-3-yl]acetate