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