Synonyms: 2-Butenoicacid, 2-methyl-,dodecahydro-5,10-dihydroxy-6,10-dimethyl-3-methylene-4-[(3-methyl-1-oxo-2-butenyl)oxy]-2-oxo-5,8-epoxycyclodeca[b]furan-11-ylester, [3aR-[3aR*,4S*,5S*,6S*,8R*,10R*,11S*(Z),11aR*]]-; 5,8-Epoxycyclodeca[b]furan,2-butenoic acid deriv.; (+)-Divaricin C; Divaricin C