Synonyms: 17,18-Dinor-8bH,9bH,10a-labda-13(16),14-diene-19,20-dioic acid, 2b,3b:15,16-diepoxy-1b,4,12-trihydroxy-5,9-dimethyl-, di-d-lactone, (12S)- (8CI);9,7-(Epoxymethano)-4H-oxireno[6,7]naphtho[2,1-c]pyran-4,11-dione,2-(3-furanyl)dodecahydro-7-hydroxy-6a,9b-dimethyl-, [2S-(2a,4aa,6ab,7b,7ab,8ab,9a,9ab,9ba)]-; 2,3-Epoxycolumbin; Jateorin; Tinosporide