Showing structure for (2s,2'r,4'as,6'r,8'as)-2',5',5',8'a-tetramethyl-3,3',4',4'a,5,6',7',8'-octahydro-2'h-spiro[furo[2,3-f]isoindole-2,1'-naphthalene]-4,6',7-triol