Synonyms: 1x,5x,7x,10x-Ambros-11(13)-en-12-oic acid,1,6,14-trihydroxy-4-oxo-, g-lactone, 14-isobutyrate (8CI); Propanoic acid, 2-methyl-,(dodecahydro-6a-hydroxy-9a-methyl-3-methylene-2,9-dioxoazuleno[4,5-b]furan-6-yl)methylester, [3aS-(3aa,6b,6aa,9ab,9ba)]-; Chiapin B