Showing structure for 3,12'-dihydroxy-5',7',11',11'-tetramethyl-6-(pyridin-3-yl)-3h-13'-oxaspiro[furo[3,2-c]pyran-2,6'-tetracyclo[10.2.2.0¹,¹⁰.0²,⁷]hexadecan]-4'-en-4-one