Showing structure for methyl 2-[6-(furan-3-yl)-12,15-dihydroxy-7,11,14-trimethyl-4,16-dioxo-5,18-dioxapentacyclo[10.5.1.1¹¹,¹⁴.0¹,¹⁰.0²,⁷]nonadecan-19-yl]-2-hydroxyacetate