betonicolide

Noun

 * 1)  A tetracyclic lactone derived from betony with IUPAC name (1S,11aS)-1,5-dihydroxy-4-(hydroxymethyl)-8,8,11a-trimethyl-1,7,7a,9,10,11-hexahydronaphtho[1,2-e][2]benzofuran-3,6-dione