Synonyms: Benz[4,5]oxireno[6,7]cyclodeca[1,2-b]furan-2,10(1H,4aH)-dione,1,12-bis(acetyloxy)-8-chloro-4b,5a,6,7,8,8a,11,11a,12,12a-decahydro-11a-hydroxy-1,4a,11-trimethyl-7-methylene-,[1S-(1R*,4aR*,4bS*,5aS*,8R*,8aS*,11S*,11aS*,12R*,12aR*)]-; Erythrolide C