Synonyms: Ophiobola-7,19-dien-25-oicacid, 14,18-epoxy-3-hydroxy-5-oxo- (8CI);Spiro[dicyclopenta[a,d]cyclooctene-3(2H),2'(3'H)-furan]-6-carboxylic acid,1,3a,4,4',5',6a,7,8,9,9a,10,10a-dodecahydro-9-hydroxy-3',9,10a-trimethyl-5'-(2-methyl-1-propenyl)-7-oxo-,[3S-[3a(3'R*,5'S*),3aa,6ab,9a,9ab,10ab]]-; Ophiobolic acid