Synonyms: 2-Butenoicacid, 3-methyl-,3,4,4a,4b,5,6,7,10,11,12,12a,13a-dodecahydro-2,8-dimethyl-12-methylene-5-(1-methylethyl)-3-oxo-2H-cyclodeca[4,5]furo[2,3-b]pyran-4-ylester, (2R*,4S*,4aS*,4bS*,5R*,8E,12aS*,13aR*)-(+)-;2H-Cyclodeca[4,5]furo[2,3-b]pyran, 2-butenoic acid deriv.; PittosporatobirasideB