Showing structure for {6-[(6-hydroxy-5,5,8a-trimethyl-2-methylidene-hexahydro-1h-naphthalen-1-yl)methyl]-2,5-dioxo-7-oxabicyclo[4.1.0]hept-3-en-3-yl}methyl 2,3-dihydroxybutanoate