Showing structure for (1r)-2-[(3r)-3-acetyl-2,2-dimethyl-6-oxopyran-3-yl]-1-[(1r,3s,6s,7s,11s)-6-(furan-3-yl)-7,11-dimethyl-4-oxo-2,5-dioxatricyclo[5.4.0.0?,?]undec-9-en-11-yl]ethyl acetate